阅读说明：本技术 一种轻型薄壁衬板自锁螺母组件及其制作方法 (Light thin-wall lining plate self-locking nut assembly and manufacturing method thereof ) 是由 张广 杨德松 李小松 陈�峰 王相波 华君 穆仁强 谢松武 旦其江 叶江华 龙文 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种轻型薄壁衬板自锁螺母组件及其制作方法,螺母组件包括衬板和铆轴螺母,所述衬板上设有供所述铆轴螺母穿过的铆接孔,所述铆轴螺母包括主体及所述主体内设置的螺纹孔,所述螺纹孔与所述主体同轴,所述主体一端的外周设有阶梯状的冲铆部,所述主体另一端的外周设有收口部,所述收口部铆接于所述铆接孔内,所述收口部的直径小于所述冲铆部的直径,且所述收口部与所述冲铆部之间设有连接部,所述连接部用于所述收口部和所述冲铆部之间的平滑连接。螺母组件的制作方法包括以下步骤：步骤一、铆轴螺母的加工；步骤二、衬板的加工；步骤三、组装。本发明中的轻型薄壁衬板自锁螺母组件满足规定的推力要求、收口部位稳定,安装可靠且不会发生弯曲。(The invention discloses a light thin-wall lining plate self-locking nut component and a manufacturing method thereof, wherein the nut component comprises a lining plate and a riveting shaft nut, a riveting hole for the riveting shaft nut to pass through is arranged on the lining plate, the riveting shaft nut comprises a main body and a threaded hole arranged in the main body, the threaded hole is coaxial with the main body, a step-shaped riveting part is arranged on the periphery of one end of the main body, a closing part is arranged on the periphery of the other end of the main body, the closing part is riveted in the riveting hole, the diameter of the closing part is smaller than that of the riveting part, a connecting part is arranged between the closing part and the riveting part, and the connecting part is used for smooth connection between the closing part and the riveting part. The manufacturing method of the nut component comprises the following steps: firstly, processing a riveting shaft nut; step two, processing the lining plate; and step three, assembling. The light thin-wall lining plate self-locking nut assembly meets the specified thrust requirement, the closing-in part is stable, the installation is reliable, and the bending cannot occur.)

1. The utility model provides a light-duty thin wall welt auto-lock nut component which characterized in that: including welt and riveting spindle nut, be equipped with the confession on the welt riveting hole that riveting spindle nut passed, riveting spindle nut includes the main part and the screw hole that sets up in the main part, the screw hole with the main part is coaxial, the periphery of main part one end is equipped with the dashing of echelonment and rivets the portion, close up the portion riveting in riveting downthehole, the periphery of the main part other end is equipped with the portion of receiving, the diameter of portion of receiving is less than dash the diameter of riveting the portion, just the portion of receiving with dash and be equipped with connecting portion between the riveting portion, connecting portion are used for the portion of receiving with dash the smooth connection between the riveting portion.

2. The method for manufacturing the self-locking nut component of the light-weight thin-wall lining plate according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:

step one, processing a rivet shaft nut: preparing materials, blanking, counting vehicles, common vehicle, removing vehicle machining burrs, tapping, removing tapping burrs, turning grooves, detecting the middle-stage appearance size, turning a closing part, performing heat treatment, removing oxide skin by sand blasting, detecting cracks and impurities by fluorescence, performing surface treatment, and detecting the final appearance size;

step two, processing of the lining plate: preparing materials, blanking, punching, chamfering an orifice, deburring, performing surface treatment and detecting the appearance size;

step three, assembling: and (4) riveting the riveting part of the riveting shaft nut into the riveting hole on the lining plate through a riveting press machine.

3. The method of manufacturing according to claim 2, wherein: and the first step of turning comprises the steps of turning a plane, drilling a boring hole, turning an excircle, knurling, blunting a sharp edge and cutting off.

4. The method of manufacturing according to claim 3, wherein: the general lathe in the first step comprises a clamping knurling surface, a lathe plane and inner and outer chamfers.

5. The method of manufacturing according to claim 4, wherein: and the lathe groove in the first step is used for machining the step-shaped rivet punching part.

6. The method of manufacturing according to claim 5, wherein: the heat treatment in the first step comprises solution and aging treatment: the solid solution temperature is 900 plus or minus 10 ℃, the time is 60min, and oil cooling is adopted; and (4) cooling in air at the aging temperature of 710 +/-10 ℃ for 16 h. After heat treatment, the hardness reaches HRC33-37, and the grain size reaches 4-5 grade.

7. The method of manufacturing according to claim 6, wherein: the surface treatment in the first step is to coat molybdenum disulfide lubricant on the surface of the main body of the rivet shaft nut.

8. The method of manufacturing according to claim 7, wherein: the surface treatment in the second step is specifically Al/Et.A (Cr) treatment.

Technical Field

The invention belongs to the technical field of mechanical part manufacturing, and particularly relates to a light thin-wall liner plate self-locking nut assembly and a manufacturing method thereof.

Background

The mechanical connection method of the light thin-wall lining plate self-locking nut is used for connecting important parts in various aircrafts, ships and civil aviation, and has specified requirements on the service life, the service environment, the service load and the installation mode of the self-locking nut. Particularly, the rivet shaft nut is arranged in the thin-wall lining plate and cannot deform, the perpendicularity after assembly is 0.1mm, then a push-off test is needed to ensure that the torque of the screw-off is not less than 3 N.mm, and the rivet shaft nut cannot fall off the thin-wall lining plate under 450N. The existing rivet shaft nut cannot meet the requirements, so that a new rivet shaft nut structure needs to be designed urgently.

Disclosure of Invention

The invention aims to provide a light thin-wall lining plate self-locking nut component and a manufacturing method thereof, which can meet the requirements in the background technology.

In order to achieve the above object, the present invention provides the following solutions:

the utility model provides a light-duty thin wall welt auto-lock nut component, includes welt and riveting nut, be equipped with the confession on the welt riveting hole that riveting nut passed, riveting nut includes the main part and the screw hole that sets up in the main part, the screw hole with the main part is coaxial, the periphery of main part one end is equipped with the dashing of echelonment and rivets the portion, the periphery of the main part other end is equipped with the portion of receiving, dash rivet the portion rivet in riveting downthehole, the diameter of receiving the portion is less than dash the diameter of riveting the portion, just receive the portion with dash and be equipped with connecting portion between the riveting portion, connecting portion are used for receive the portion with dash the smooth connection between the riveting portion.

The invention provides a manufacturing method of the light thin-wall lining plate self-locking nut component, which comprises the following steps:

step one, processing a rivet shaft nut: preparing materials, blanking, counting vehicles, common vehicle, removing vehicle machining burrs, tapping, removing tapping burrs, turning grooves, detecting the middle-stage appearance size, turning a closing part, performing heat treatment, removing oxide skin by sand blasting, detecting cracks and impurities by fluorescence, performing surface treatment, and detecting the final appearance size;

step two, processing of the lining plate: preparing materials, blanking, punching, chamfering an orifice, deburring, performing surface treatment and detecting the appearance size;

step three, assembling: and (4) riveting the riveting part of the riveting shaft nut into the riveting hole on the lining plate through a riveting press machine.

Preferably, the turning in the first step includes the steps of turning a plane, drilling and boring holes, turning an outer circle, knurling, grooving, blunting sharp edges and cutting.

Preferably, the general lathe in the first step comprises a clamping knurling surface, a lathing plane and inner and outer chamfers.

Preferably, the lathe groove in the first step is used for machining a stepped rivet punching part.

Preferably, the heat treatment in the first step includes a solution aging treatment: the solid solution temperature is 900 plus or minus 10 ℃, the time is 60min, and oil cooling is adopted; and (4) cooling in air at the aging temperature of 710 +/-10 ℃ for 16 h. After heat treatment, the hardness reaches HRC33-37, and the grain size reaches 4-5 grade.

Preferably, the surface treatment in the first step is to coat a molybdenum disulfide lubricant on the surface of the main body of the rivet shaft nut.

Preferably, the surface treatment in the second step is specifically Al/et.a (Cr) treatment.

The invention has the beneficial effects that: 1. the lining plate is formed by machining, holes of the lining plate are prepared by riveting a shaft nut, the size consistency of the product and the push-off force are guaranteed, and the quality of parts is stable.

2. The riveting shaft nut adopts an elliptical closing-in mode, and the purpose is to ensure stable performance; and a notching mode (a punching and riveting part structure) is adopted at the punching and riveting end, so that the pushing force is not lower than 400N after the assembly.

Drawings

FIG. 1 is a schematic structural view of a rivet spindle nut according to the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a schematic structural view of the lining plate of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the riveting device comprises a main body 1, a threaded hole 2, an internal thread 3, a riveting part 4, a connecting part 5, a closing part 6, a lining plate 7 and a riveting hole 8.

The present invention provides the following scheme: referring to fig. 1-3, a light-weight thin-wall liner self-locking nut assembly comprises a liner plate 7 and a rivet shaft nut, wherein a riveting hole 8 for the rivet shaft nut to pass through is arranged on the liner plate 7, the rivet shaft nut comprises a main body 1 and a threaded hole 2 arranged in the main body 1, the threaded hole 2 is coaxial with the main body 1, a punching and riveting part 4 is arranged on the periphery of one end of the main body 1, the punching and riveting part 6 is riveted in the riveting hole 8, the punching and riveting part 6 comprises a V-shaped groove, one side wall of the V-shaped groove is vertical to the axis of the main body 1, the other side of the V-shaped groove forms a certain inclination angle with the axis of the main body 1, so that the lining plate can be stabilized to meet the pushing-off force after riveting, the periphery of the other end of the main body 1 is provided with a closing-in part 6 connected with an external structure, the diameter of the closing-in part 6 is smaller than that of the punching-riveting part 4, and a connecting part 5 is arranged between the closing part 6 and the riveting part 4, and the connecting part 5 is used for smooth connection between the closing part 6 and the riveting part 4.

The invention also provides a manufacturing method of the light thin-wall lining plate self-locking nut component, which comprises the following steps:

the method comprises the following steps of firstly, processing a rivet shaft nut, and comprises the following processes:

(1) preparing materials: selecting solid solution state high-temperature alloy as a raw material;

(2) blanking: blanking raw materials according to the specification of parts;

(3) counting vehicles: turning a plane, drilling and boring holes, turning an excircle, knurling, blunting a sharp edge and cutting off;

(4) general vehicle: clamping a knurled surface, turning a plane and chamfering the inside and the outside;

(5) deburring: removing burrs generated by turning;

(6) tapping: tapping is carried out by adopting a tapping tool, (the tapping thread does not have the defects of tooth decay, broken buckle, folding, burrs and the like, and the passing and stopping of the thread and the verticality requirements are ensured);

(7) deburring: removing burrs generated after tapping;

(8) turning a groove: lathing a punching and riveting part in a V-shaped groove shape;

(9) and (4) detecting the middle-stage appearance size: carrying out size and appearance inspection according to product requirements;

(10) closing: turning a closing part as required;

(11) and (3) heat treatment: carrying out solid solution treatment with time-effect treatment at the solid solution temperature of 900 +/-10 ℃ for 60min, and adopting oil cooling; and (4) cooling in air at the aging temperature of 710 +/-10 ℃ for 16 h. The required performance reaches HRC33-37, and the grain size reaches 4-5 grade;

(12) sand blasting: removing oxide skin;

(13) fluorescence detection: inspecting defects such as cracks, impurities and the like;

(14) surface treatment: coating a molybdenum disulfide lubricant on the surface;

(15) and (4) total inspection: and finally, detecting the size and the appearance.

Step two, processing the lining plate, which comprises the following processes:

(1) preparing materials: selecting plates with different thicknesses according to the specification of the part;

(2) blanking: blanking according to the appearance of the product;

(3) performing bench work: chamfering the hole opening;

(4) deburring: removing all burrs;

(5) surface treatment: al/et.a (Cr) (chromic acid anodizing treatment);

(6) and (4) checking: and carrying out size and appearance inspection according to the product requirements.

Step three, assembling a riveting shaft nut and a lining plate:

(1) collecting parts: riveting shaft nuts and lining plates with the same specification are adopted;

(2) punching and riveting: riveting the punching and riveting part of the riveting shaft nut into the riveting hole in the lining plate through a riveting machine, ensuring the punching and riveting height and verticality, and checking the through and stop of the thread;

(3) and (4) checking: and carrying out size, appearance inspection and locking torque test according to the product requirements.

According to the material selection and the process layout, the product which meets the specified use requirement is processed and manufactured, and the product quality is stable.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present invention should be determined by the content of the claims, and the description of the embodiments and the like in the specification should be used to interpret the content of the claims.