CN113245500A - Low-frequency vibration auxiliary riveting device and using method thereof - Google Patents

Low-frequency vibration auxiliary riveting device and using method thereof Download PDF

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Publication number
CN113245500A
CN113245500A CN202110568812.6A CN202110568812A CN113245500A CN 113245500 A CN113245500 A CN 113245500A CN 202110568812 A CN202110568812 A CN 202110568812A CN 113245500 A CN113245500 A CN 113245500A
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connecting plate
insert
low
top iron
frequency vibration
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CN113245500B (en
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林军
于从潇
李姣
管延锦
王广春
赵国群
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Shandong University
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Shandong University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention discloses a low-frequency vibration assisted riveting device and a using method thereof, wherein the low-frequency vibration assisted riveting device comprises: the device comprises a base, a hydraulic cylinder, a punch, a first top iron, a second top iron, an inserting piece and a screwing piece; the hydraulic cylinder drives the punch to punch the rivet, and the base is detachably provided with a first top iron or a second top iron; the contact surface of the first top iron and the connecting plate is provided with a positioning groove which is arranged downwards, and a conical bulge is arranged upwards along the edge of the positioning groove; the insert is inserted into the reserved through hole of the connecting plate and fixed on the connecting plate through the screwing piece, the insert is provided with a through hole, the screwing piece is provided with a stepped threaded hole, the through hole and the stepped threaded hole are respectively provided with a second chamfer and a first chamfer, the rivet is limited through the first chamfer and the second chamfer after being riveted, and the loaded end faces of the insert and the screwing piece after being riveted are planes. The invention has the beneficial effects that: the forming process is simple, the riveting quality is good, the operation is convenient, the structure is stable, and the fatigue resistance is good.

Description

Low-frequency vibration auxiliary riveting device and using method thereof
Technical Field
The invention relates to a mechanical connection mode, in particular to a low-frequency vibration auxiliary riveting device and a using method thereof.
Background
The riveting is to form an upset head by utilizing the upsetting deformation of the rivet rod, and finally realize the connection of plates. The riveting technology is widely applied to the aerospace field, and compared with other connection modes, the riveting technology has the advantages of simple process, firm connection and the like.
Common riveting modes at present comprise common riveting, electromagnetic riveting, ultrasonic vibration assisted riveting and the like. The common riveting is widely applied to parts without special requirements in a machine body, but stable and uniform interference fit is difficult to form, and the defects of cracks and the like are easy to occur in the riveting process of materials, composite materials and large-size rivets which are difficult to form; the electromagnetic riveting forming rate is high, stable and uniform interference fit can be formed, the technical problems of common riveting are solved, but most of heat converted from plastic work in the electromagnetic riveting process cannot be dissipated in microsecond-level forming time, a heat-insulating shear band is formed in the material, and even shear damage can be generated; the ultrasonic vibration assisted riveting has the advantages of low riveting pressure, uniform distribution of interference amount along the nail rod, stable and firm riveting structure and good fatigue resistance, but the ultrasonic vibration equipment has low power and is difficult to form high-strength or large-diameter rivets.
Therefore, the riveting method which is convenient to operate, simple in forming process and good in riveting quality needs to be researched by referring to the existing riveting forming method.
Disclosure of Invention
The invention aims to provide a low-frequency vibration auxiliary riveting device and a using method thereof, and aims to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: a low frequency vibration assisted riveting apparatus comprising: the device comprises a base, a hydraulic cylinder, a punch, a first top iron, a second top iron, an inserting piece and a screwing piece; the hydraulic cylinder drives the punch to punch the rivet, and the base is detachably provided with a first top iron or a second top iron; the contact surface of the first top iron and the connecting plate is provided with a positioning groove which is arranged downwards, a conical bulge is arranged upwards along the edge of the positioning groove, and the contact surface of the second top iron and the connecting plate is a plane; the insert inserts the reservation through-hole of connecting plate, through it fixes on the connecting plate to revolve wrong piece, the insert is provided with the through-hole, it is provided with the ladder screw hole to revolve wrong piece, through-hole and ladder screw hole are provided with second chamfer and first chamfer respectively, the rivet is riveted the back and is passed through first chamfer and second chamfer are spacing, and the riveting back the insert with revolve wrong piece by loaded terminal surface be the plane, the rigidity that the insert was revolved wrong piece is greater than the rigidity of rivet, the insert with revolve wrong piece and do not warp at the riveting in-process.
In an alternative embodiment, the connecting plate comprises an upper connecting plate and a lower connecting plate, and the upper connecting plate and the lower connecting plate are bonded.
In an alternative embodiment, the portion of the insert that penetrates out of the connecting plate is provided with an external thread, and the external thread is screwed with an internal thread of the stepped threaded hole of the screwing piece.
In an alternative embodiment, an elastic sleeve is arranged between the insert and the connecting plate along the axial direction, and the elastic sleeve is arranged in the reserved through hole.
In an alternative embodiment, a second spacer is arranged between the insert and the upper connecting plate along the radial direction; and a first gasket is arranged between the screwing piece and the lower connecting plate along the radial direction.
In an alternative embodiment, the end faces of the insert and the screw are provided with a plurality of screw grooves.
In an alternative embodiment, the upper connecting plate and the lower connecting plate are connected through more than two inserting pieces and screwing pieces, and the number of the rivets is equal to that of the reserved through holes.
In an alternative embodiment, the initial state of the rivet is cylindrical.
In an optional embodiment, the electro-hydraulic servo hydraulic system of the hydraulic cylinder and the low-frequency vibration experiment equipment can realize the low-frequency vibration of the punch within the frequency of 0-50 Hz and the amplitude range of 0-0.5 mm.
In another aspect, the present invention further provides a method for using the low frequency vibration assisted riveting device, including the following steps:
step 1, pre-bonding an upper connecting plate and a lower connecting plate, and correspondingly aligning the reserved through holes of more than two upper connecting plates and lower connecting plates;
step 2, after the elastic sleeve, the first gasket and the second gasket are placed at the correct positions, the inserting piece is inserted into the reserved through hole to expose the external thread, and then the internal thread of the screwing piece is screwed with the external thread of the inserting piece by using a tool;
step 3, mounting the first top iron on the upper surface of the base, and placing the connecting plate on the first top iron to enable the conical protrusion of the first top iron to be inserted into the first chamfer of the first top iron, so that the small hole of the stepped threaded hole of the screwing piece is integrally cylindrical;
step 4, sequentially penetrating the rivet through the through hole of the inserting piece and the small hole of the stepped threaded hole of the screwing piece, and positioning the rivet in the positioning groove of the first top iron, wherein the diameters of the through hole, the small hole of the stepped threaded hole and the positioning groove are equal to the diameter of the rivet; starting a hydraulic cylinder to drive a punch, and carrying out loading riveting on the rivet in a low-frequency vibration mode with the frequency of 0-50 Hz and the amplitude range of 0-0.5 mm until the second chamfer of the insert is filled in the loading end of the rivet, so that the loading surface of the insert is a plane; the system comprises a high-performance load and displacement sensor, a JETTER controller, a PID control algorithm, a feedback signal and a controller, wherein the high-performance load and displacement sensor is used for acquiring load displacement data in time, and the JETTER controller and the PID control algorithm are used for carrying out real-time tracking and closed-loop control on the displacement and the load of a hydraulic cylinder, calculating and sending the feedback signal; the current signal is amplified and then transmitted to a coil of the electro-hydraulic servo valve to generate a magnetic field to enable the armature to rotate and drive the baffle and the valve body to move, so that the flow of the servo valve is accurately controlled, and the piston and the punch of the hydraulic cylinder achieve preset low-frequency vibration;
step 5, turning over the connecting plate, detaching the first top iron, installing the second top iron, installing the surface of the insert loaded as a plane in contact with the plane of the second top iron, starting the hydraulic cylinder to drive the punch again, and continuously carrying out loading riveting on the other end of the rivet (10) in a low-frequency vibration mode with the frequency of 0-50 Hz and the amplitude range of 0-0.5 mm until the loading end of the rivet is filled with the first chamfer of the screwing piece, so that the loading surface of the screwing piece is a plane;
and 6, repeating the steps to finish riveting other reserved through holes.
The invention has the beneficial effects that:
1. the low-frequency vibration auxiliary riveting device and the method are suitable for connecting steel, aluminum alloy and titanium alloy, particularly carbon fiber composite material plates, the rivets can be aluminum alloy and titanium alloy rivets, the manufacturing cost is low, the forming process is simple, the riveting quality is good, the operation is convenient, the noise is low, the production efficiency is high, the interference amount can be improved by 30% compared with that of a common riveting mode, the structure is stable, and the fatigue resistance is good.
2. The low-frequency vibration auxiliary riveting device is characterized in that the lower end of.
3. The low-frequency vibration auxiliary riveting device provided by the invention adopts the first top iron and the second top iron which are specially designed, and is matched with the screwing piece and the inserting piece, so that the rest positions of the rivet except two ends are not deformed, and the end surfaces of the screwing piece and the inserting piece are formed into a plane after the riveting is finished, the rivet is prevented from extending out additionally, the problem that other people are accidentally injured by a connecting plate in the using process is solved, and the use safety of the connecting plate is improved. It should be noted that the technical effect is achieved by adopting the structure that the conical bulge and the chamfer are matched.
Drawings
FIG. 1 is a schematic view of the overall structure of a low-frequency vibration-assisted riveting apparatus according to the present invention;
FIG. 2 is a top view of two webs of the present invention after riveting is complete;
FIG. 3 is a sectional view taken along line A-A of FIG. 2 according to the present invention;
FIG. 4 is an anatomical view of a riveted joint of the invention with two webs unfulfilled;
FIG. 5 is a schematic view of the two connection plates of the present invention being pressed tightly by two supporting irons;
FIG. 6 is a schematic view of the two webs of the present invention being riveted together;
FIG. 7 is an exploded view of the clinch member of the present invention with the two webs un-clinched.
Description of the reference numerals
1 upper junction plate, 2 lower junction plates, 3 inserts, 4 revolve and twist piece, 5 second gaskets, 6 elastic sleeve, 7 first gaskets, 8 second chamfers, 9 first chamfers, 10 rivets, 11 first back iron, 12 positioning groove, 13 toper arch, 14 second back iron, 15 reservation through-holes, 16 revolve and twist the recess, 17 bases, 18 drift, 19 pneumatic cylinders.
Detailed Description
A method and apparatus for low frequency vibration assisted riveting according to the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1-7, the present embodiment provides a low frequency vibration assisted riveting apparatus, including: a base 17, a hydraulic cylinder 19, a punch 18, a first top iron 11, a second top iron 14, an insert 3 and a screw 4; wherein, the hydraulic cylinder 19 drives the punch 18 to punch the rivet 10, and the base 17 is detachably provided with a first top iron 11 or a second top iron 14; the contact surface of the first top iron 11 and the connecting plate is provided with a positioning groove 12 which is arranged downwards, the edge of the positioning groove 12 is provided with a conical bulge 13 upwards, and the contact surface of the second top iron 14 and the connecting plate is a plane; the insert 3 is inserted into the reserved through hole 15 of the connecting plate and fixed on the connecting plate through the screwing piece 4, the insert 3 is provided with a through hole, the screwing piece 4 is provided with a stepped threaded hole, the through hole and the stepped threaded hole are respectively provided with a second chamfer 8 and a first chamfer 9, the rivet 10 is limited through the first chamfer 9 and the second chamfer 8 after being riveted, the loaded end faces of the insert 3 and the screwing piece 4 after being riveted are planes, the rigidity of the insert 3 and the screwing piece 4 is larger than that of the rivet 10, and the insert 3 and the screwing piece 4 are not deformed in the riveting process. In the riveting process, the rivet 10 is not in contact with the connecting plate, so that the riveting quality is ensured, and the connecting plate can be prevented from being deformed or damaged.
Specifically, the connecting plates comprise an upper connecting plate 1 and a lower connecting plate 2, the upper connecting plate 1 and the lower connecting plate 2 are bonded, and initial stability of the two connecting plates is guaranteed in the process of starting installation of the inserting piece 3 and the screwing piece 4. Specifically, the part of the insert 3 penetrating out of the connecting plate is provided with an external thread which is screwed with an internal thread of the stepped threaded hole of the screwing piece 4. An elastic sleeve 6 is arranged between the insert 3 and the connecting plate along the axial direction, and the elastic sleeve 6 is arranged in the reserved through hole 15. A second gasket 5 is arranged between the insert 3 and the upper connecting plate 1 along the radial direction; a first spacer 7 is arranged radially between the screw element 4 and the lower connecting plate 2. It should be noted that the elastic sleeve 6, the second gasket 5 and the first gasket 7 ensure the waterproof performance of the connecting plate in the use process.
Further, the end surfaces of the insert 3 and the screw 4 are provided with a plurality of screw grooves 16, so that the mounting is convenient and the operation is simple. The upper connecting plate 1 and the lower connecting plate 2 are connected through more than two inserting pieces 3 and screwing pieces 4, and the number of the rivets 10 is equal to that of the reserved through holes 15. Preferably, the number of inserts 3 and screws 4 is two or three. In addition, the initial state position of rivet 10 is the cylinder type, is applicable to steel, aluminum alloy and titanium alloy, especially the connection of carbon-fibre composite material board, and rivet 10 can be aluminum alloy and titanium alloy rivet, low in manufacturing cost, and forming process is simple, and the riveting is of high quality, convenient operation, and the noise is little, and production efficiency is high, compares in ordinary riveting mode interference volume and can improve 30%, stable in structure, and fatigue resistance can be good.
Particularly, the electro-hydraulic servo hydraulic system of the hydraulic cylinder 19 and the low-frequency vibration experimental equipment can realize the low-frequency vibration of the punch 18 within the frequency of 0-50 Hz and the amplitude range of 0-0.5 mm. The low-frequency vibration is generated by acquiring load displacement data in time through a high-performance load and displacement sensor, tracking and carrying out closed-loop control on the displacement and the load of the hydraulic cylinder in real time by using a JETTER controller and a PID control algorithm, calculating and sending a feedback signal; the current signal is amplified and then transmitted to the coil of the electro-hydraulic servo valve to generate a magnetic field to enable the armature to rotate and drive the baffle and the valve body to move, so that the flow of the servo valve is accurately controlled, and the piston and the punch of the hydraulic cylinder achieve preset vibration.
In another embodiment, a method for using the low-frequency vibration assisted riveting device is provided, which comprises the following steps:
step 1, pre-bonding an upper connecting plate 1 and a lower connecting plate 2, and correspondingly aligning reserved through holes 15 of more than two upper connecting plates 1 and lower connecting plates 2;
step 2, after the elastic sleeve 6, the first gasket 7 and the second gasket 5 are placed at the correct positions, the inserting piece 3 is inserted into the reserved through hole 15 to expose the external thread, and then the internal thread of the screwing piece 4 is screwed with the external thread of the inserting piece 3 by using a tool;
step 3, mounting the first top iron 11 on the upper surface of the base 17, placing the connecting plate on the first top iron 11, and inserting the conical protrusion 13 of the first top iron 11 into the first chamfer 19 of the first top iron 11 to enable the small hole of the stepped threaded hole of the screwing piece 4 to be cylindrical as a whole;
step 4, sequentially penetrating the rivet 10 through the through hole of the inserting piece 3 and the small hole of the stepped threaded hole of the screwing piece 4, and positioning in the positioning groove 12 of the first top iron 11, wherein the diameters of the through hole, the small hole of the stepped threaded hole and the positioning groove 12 are equal to the diameter of the rivet 10; starting a hydraulic cylinder 19 to drive a punch 18, and carrying out loading riveting on the rivet (10) by adopting a low-frequency vibration mode with the frequency of 0-50 Hz and the amplitude range of 0-0.5 mm until the second chamfer 8 of the insert 3 is filled with the loading end of the rivet 10, so that the loading surface of the insert 3 is a plane;
step 5, turning over the connecting plate, detaching the first top iron 11, installing the second top iron 14, installing the surface of the insert 3 loaded as a plane in contact with the plane of the second top iron 14, starting the hydraulic cylinder 19 again to drive the punch 18, continuously carrying out loading riveting on the other end of the rivet (10) in a low-frequency vibration mode with the frequency of 0-50 Hz and the amplitude range of 0-0.5 mm until the loading end of the rivet 10 is filled with the first chamfer 9 of the screwing piece 4, and enabling the loading surface of the screwing piece 4 to be a plane;
and 6, repeating the steps to finish riveting other reserved through holes 15.
It should be noted that, in the method, the insert 3 and the screwing piece 4 are pre-connected, wherein the connection rigidity of the insert 3 and the screwing piece 4 is far greater than that of the rivet, the insert 3 and the screwing piece 4 are not deformed in the riveting process, and the rivet is not contacted with the connecting plate 10 in the riveting process, so that the riveting quality is ensured, and the connecting plate can be prevented from being deformed or damaged. In addition, the specially designed first top iron 11 and second top iron 14 are adopted to match with the screwing piece 3 and the inserting piece 4, so that the rest positions of the rivet 10 except the two ends are not deformed, the end faces of the screwing piece 3 and the inserting piece 4 are made to be flat after riveting is completed, the rivet 10 is prevented from extending extra, the problem that other people are accidentally injured by the connecting plate in the using process is solved, and the using safety of the connecting plate is improved. It should be noted that the above technical effect is achieved by adopting the structure that the conical projection 13 is matched with the chamfer.
It is to be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention and to explain the working steps, but the present invention is not limited thereto. Various modifications and improvements made on the basis of the present invention are considered to be within the scope of the present invention.

Claims (10)

1.一种低频振动辅助铆接的装置，包括：底座(17)、液压缸(19)、冲头(18)、第一顶铁(11)、第二顶铁(14)、插入件(3)和旋拧件(4)；其中，所述液压缸(19)驱动所述冲头(18)冲压铆钉(10)，所述底座(17)上可拆卸安装有第一顶铁(11)或第二顶铁(14)；1. A low-frequency vibration-assisted riveting device, comprising: a base (17), a hydraulic cylinder (19), a punch (18), a first top iron (11), a second top iron (14), an insert (3) ) and a screw (4); wherein, the hydraulic cylinder (19) drives the punch (18) to punch the rivet (10), and the base (17) is detachably mounted with a first top iron (11) or second top iron (14); 其特征在于，所述第一顶铁(11)与连接板的接触面具有向下设置的定位凹槽(12)，所述定位凹槽(12)沿其边缘向上设置有锥形凸起(13)，所述第二顶铁(14)与连接板的接触面为平面；所述插入件(3)插入连接板的预留通孔(15)，通过所述旋拧件(4)固定在连接板上，所述插入件(3)设置有通孔，所述旋拧件(4)设置有阶梯螺纹孔，所述通孔和阶梯螺纹孔分别设置有第二倒角(8)和第一倒角(9)，所述铆钉(10)铆接后通过所述第一倒角(9)和第二倒角(8)限位，铆接后所述插入件(3)和旋拧件(4)的被加载的端面为平面，所述插入件(3)和旋拧件(4)的刚度大于所述铆钉(10)的刚度，所述插入件(3)和旋拧件(4)在铆接过程中不变形。It is characterized in that the contact surface between the first top iron (11) and the connecting plate has a positioning groove (12) arranged downward, and the positioning groove (12) is provided with a conical protrusion ( 13), the contact surface between the second top iron (14) and the connecting plate is a plane; the insert (3) is inserted into the reserved through hole (15) of the connecting plate, and is fixed by the screw (4) On the connecting plate, the insert (3) is provided with a through hole, the screw (4) is provided with a stepped threaded hole, and the through hole and the stepped threaded hole are respectively provided with a second chamfer (8) and The first chamfer (9), the rivet (10) is limited by the first chamfer (9) and the second chamfer (8) after riveting, and the insert (3) and the screw after riveting The loaded end face of (4) is a plane, the rigidity of the insert (3) and the screw (4) is greater than the rigidity of the rivet (10), the insert (3) and the screw (4) ) does not deform during the riveting process. 2.根据权利要求1所述的低频振动辅助铆接的装置，其特征在于，所述连接板包括上连接板(1)和下连接板(2)，所述上连接板(1)和下连接板(2)粘接。2. The low-frequency vibration-assisted riveting device according to claim 1, wherein the connecting plate comprises an upper connecting plate (1) and a lower connecting plate (2), the upper connecting plate (1) and the lower connecting plate The plate (2) is glued. 3.根据权利要求2所述的低频振动辅助铆接的装置，其特征在于，所述插入件(3)穿出所述连接板的部分设置有外螺纹，所述外螺纹与所述旋拧件(4)的阶梯螺纹孔的内螺纹旋合。3. The low-frequency vibration-assisted riveting device according to claim 2, characterized in that, the part of the insert (3) passing through the connecting plate is provided with an external thread, and the external thread is connected to the screw member (4) The inner thread of the stepped threaded hole is screwed together. 4.根据权利要求3所述的低频振动辅助铆接的装置，其特征在于，所述插入件(3)与所述连接板之间沿轴向设置有弹性套筒(6)，所述弹性套筒(6)置于所述预留通孔(15)中。4 . The low-frequency vibration-assisted riveting device according to claim 3 , wherein an elastic sleeve ( 6 ) is axially arranged between the insert ( 3 ) and the connecting plate, and the elastic sleeve The cartridge (6) is placed in the reserved through hole (15). 5.根据权利要求4所述的低频振动辅助铆接的装置，其特征在于，所述插入件(3)与所述上连接板(1)之间沿径向设置有第二垫片(5)；所述旋拧件(4)与所述下连接板(2)之间沿径向设置有第一垫片(7)。5 . The low-frequency vibration-assisted riveting device according to claim 4 , wherein a second gasket ( 5 ) is radially arranged between the insert ( 3 ) and the upper connecting plate ( 1 ). 6 . ; A first gasket (7) is arranged in the radial direction between the screw member (4) and the lower connecting plate (2). 6.根据权利要求5所述的低频振动辅助铆接的装置，其特征在于，所述插入件(3)和旋拧件(4)的端面设置有多个旋拧凹槽(16)。6 . The low-frequency vibration-assisted riveting device according to claim 5 , wherein a plurality of screw grooves ( 16 ) are provided on the end surfaces of the insert ( 3 ) and the screw member ( 4 ). 7 . 7.根据权利要求6所述的低频振动辅助铆接的装置，其特征在于，所述上连接板(1)和下连接板(2)通过两个以上插入件(3)和旋拧件(4)连接，所述铆钉(10)的数量与所述预留通孔(15)的数量相等。7. The low-frequency vibration-assisted riveting device according to claim 6, wherein the upper connecting plate (1) and the lower connecting plate (2) pass through two or more inserts (3) and screw members (4) ) connection, the number of the rivets (10) is equal to the number of the reserved through holes (15). 8.根据权利要求6所述的低频振动辅助铆接的装置，其特征在于，所述铆钉(10)的初始状态位圆柱型。8 . The low-frequency vibration-assisted riveting device according to claim 6 , wherein the initial state of the rivet ( 10 ) is cylindrical. 9 . 9.根据权利要求1所述的低频振动辅助铆接的装置，其特征在于，所述液压缸(19)的电液伺服液压系统与低频振动实验设备能够实现0～50Hz频率和0～0.5mm振幅范围内的冲头(18)低频振动。9. The low-frequency vibration-assisted riveting device according to claim 1, wherein the electro-hydraulic servo-hydraulic system and the low-frequency vibration experimental equipment of the hydraulic cylinder (19) can achieve a frequency of 0-50 Hz and an amplitude of 0-0.5 mm The punch (18) in the range vibrates at a low frequency. 10.一种如权利要求1-9所述的低频振动辅助铆接的装置的使用方法，包括如下步骤：10. A method of using a device for low-frequency vibration-assisted riveting as claimed in claims 1-9, comprising the steps of: 步骤1，将上连接板(1)和下连接板(2)预粘接，将两个以上的上连接板(1)和下连接板(2)的预留通孔(15)相应地对齐；Step 1: Pre-bond the upper connecting plate (1) and the lower connecting plate (2), and align the reserved through holes (15) of the two or more upper connecting plates (1) and the lower connecting plate (2) accordingly ; 步骤2，弹性套筒(6)、第一垫片(7)、第二垫片(5)置于正确位置后，将插入件(3)插入预留通孔(15)中露出外螺纹，再使用工具将旋拧件(4)的内螺纹与插入件(3)的外螺纹旋合；Step 2: After the elastic sleeve (6), the first gasket (7) and the second gasket (5) are placed in the correct positions, insert the insert (3) into the reserved through hole (15) to expose the external thread, Then use a tool to screw the inner thread of the screw (4) with the outer thread of the insert (3); 步骤3，将第一顶铁(11)安装于底座(17)的上表面，将连接板置于第一顶铁(11)上，使第一顶铁(11)的锥形凸起(13)插入第一顶铁(11)的第一倒角(19)，使旋拧件(4)的阶梯螺纹孔的小孔整体呈圆柱形；Step 3, install the first top iron (11) on the upper surface of the base (17), place the connecting plate on the first top iron (11), and make the conical protrusion (13) of the first top iron (11) ) is inserted into the first chamfer (19) of the first top iron (11), so that the small hole of the stepped threaded hole of the screw (4) is cylindrical as a whole; 步骤4，将铆钉(10)依次穿过插入件(3)的通孔、旋拧件(4)的阶梯螺纹孔的小孔，在第一顶铁(11)的定位凹槽(12)中定位，其中，通孔、阶梯螺纹孔的小孔、定位凹槽(12)的直径与铆钉(10)的直径相等；启动液压缸(19)驱动冲头(18)，采用0～50Hz频率、0～0.5mm振幅范围的低频振动的方式对铆钉(10)进行加载铆接，直至铆钉(10)的加载端填充满插入件(3)的第二倒角(8)，使插入件(3)的加载面为平面；其中，通过高性能载荷和位移传感器及时采集载荷位移数据，利用JETTER控制器和PID控制算法对液压缸(19)位移和载荷进行实时跟踪和闭环控制，计算并发出反馈信号；电流信号经放大后传递至电液伺服阀线圈，产生磁场使衔铁发生转动，带动挡板和阀体移动，从而精确控制伺服阀流量，使液压缸(19)活塞和冲头(18)达成预先设定的低频振动；Step 4: Pass the rivet (10) through the through hole of the insert (3) and the small hole of the stepped threaded hole of the screw (4) in sequence, and place it in the positioning groove (12) of the first top iron (11). Positioning, wherein, the diameter of the through hole, the small hole of the stepped threaded hole, and the positioning groove (12) are equal to the diameter of the rivet (10); start the hydraulic cylinder (19) to drive the punch (18), using a frequency of 0 to 50 Hz, The rivet (10) is loaded and riveted by means of low-frequency vibration in the amplitude range of 0-0.5 mm, until the loaded end of the rivet (10) is filled with the second chamfer (8) of the insert (3), so that the insert (3) The loading surface of the hydraulic cylinder (19) is a plane; among them, the load displacement data is collected in time through high-performance load and displacement sensors, and the displacement and load of the hydraulic cylinder (19) are tracked and closed-loop controlled in real time by the JETTER controller and PID control algorithm, and the feedback signal is calculated and sent out. ; The current signal is amplified and transmitted to the electro-hydraulic servo valve coil, generating a magnetic field to make the armature rotate, driving the baffle and the valve body to move, so as to accurately control the flow of the servo valve, so that the hydraulic cylinder (19) piston and punch (18) Pre-set low frequency vibration; 步骤5，将连接板翻转，拆下第一顶铁(11)，安装第二顶铁(14)，将加载为平面的插入件(3)的表面与第二顶铁(14)的平面接触安装，再次启动液压缸(19)驱动冲头(18)，继续采用0～50Hz频率、0～0.5mm振幅范围的低频振动方式对铆钉(10)的另一端进行加载铆接，直至铆钉(10)的该加载端填充满旋拧件(4)的第一倒角(9)，使旋拧件(4)的加载面为平面；Step 5: Turn the connecting plate over, remove the first top iron (11), install the second top iron (14), and contact the surface of the loaded insert (3) with the plane of the second top iron (14) Install, start the hydraulic cylinder (19) again to drive the punch (18), and continue to load and rive the other end of the rivet (10) by using a low-frequency vibration method with a frequency of 0 to 50 Hz and an amplitude range of 0 to 0.5 mm until the rivet (10) The loading end of the screw is filled with the first chamfer (9) of the screw member (4), so that the loading surface of the screw member (4) is a plane; 步骤6，重复上述步骤完成其他预留通孔(15)处的铆接。Step 6: Repeat the above steps to complete the riveting at other reserved through holes (15).
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JP2004025324A (en) * 2002-06-24 2004-01-29 Honda Motor Co Ltd Chamfering tool for rivet hole
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114918361A (en) * 2022-06-06 2022-08-19 山东大学 Low-frequency auxiliary self-piercing riveting device and riveting method using same
CN114918361B (en) * 2022-06-06 2023-08-22 山东大学 Low-frequency auxiliary self-piercing riveting device and riveting method using same

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