CN-224230917-U - Electromagnetic drive type unilateral riveting force and riveting speed monitoring device

Abstract

The utility model belongs to the technical field of unilateral riveting, and particularly relates to an electromagnetic drive type unilateral riveting force and riveting speed monitoring device which comprises a magnetostrictive displacement sensor, a guide rod and a force sensor, wherein the magnetostrictive displacement sensor is arranged above a coil, the guide rod penetrates through the coil to be connected with an amplifier, the axis of the guide rod and the axis of the magnetostrictive displacement sensor are positioned on the same straight line, a position magnet of the magnetostrictive displacement sensor is connected with the guide rod, and the force sensor is arranged between the amplifier and a punch. The utility model can realize reliable monitoring of riveting force and riveting speed in electromagnetic driving type single-sided riveting, and provides accurate and reliable data for optimizing and controlling quality of single-sided riveting process.

Inventors

• JIANG HAO
• CAI DA
• CUI JUNJIA
• LI GUANGYAO
• WU XINGLONG

Assignees

• 湖南大学

Dates

Publication Date

20260512

Application Date

20250618

Claims (10)

1. 1. The utility model provides an electromagnetic drive formula unilateral riveted riveting force and riveting speed monitoring devices, characterized by, includes magnetostriction displacement sensor (1), guide bar (2) and force sensor (3), magnetostriction displacement sensor (1) set up in coil (8) top, guide bar (2) pass coil (8) and are connected with amplifier (10), and the axis of guide bar (2) is located same straight line with the axis of magnetostriction displacement sensor (1), position magnet (101) of magnetostriction displacement sensor (1) are connected with guide bar (2), force sensor (3) set up between amplifier (10) and drift (11).
2. 2. The electromagnetic drive type unilateral riveting force and riveting speed monitoring device according to claim 1, wherein the magnetostrictive displacement sensor (1) is arranged on the support (7), the support (7) is positioned above the coil (8), a through hole is formed in the support (7), the magnetostrictive displacement sensor (1) is arranged in the through hole in a penetrating way, one end of the guide rod (2) is arranged in the through hole in a penetrating way, the other end of the guide rod is connected with the amplifier (10), and the position magnet (101) is connected with one end of the guide rod (2) arranged in the through hole in a penetrating way.
3. 3. The electromagnetic drive type unilateral riveting force and riveting speed monitoring device according to claim 2, wherein one end of the guide rod (2) penetrating through the through hole is axially provided with a matching hole (201), and one end of the magnetostrictive displacement sensor (1) facing the guide rod (2) is penetrated into the matching hole (201).
4. 4. The electromagnetic drive type unilateral riveting force and riveting speed monitoring device according to claim 3, wherein one end of the guide rod (2) penetrating through the through hole is axially matched with the through hole in a sliding manner.
5. 5. The electromagnetic drive type unilateral riveting force and riveting speed monitoring device according to claim 4, further comprising a guide sleeve (4) and a guide post cap (5), wherein the guide sleeve (4) is arranged on the inner wall of the through hole, the guide post cap (5) is in sliding fit with the inner wall of the guide sleeve (4), the guide post cap (5) is arranged at one end of the guide rod (2) penetrating through the through hole, the magnetostrictive displacement sensor (1) penetrates through the matching hole (201) along the guide post cap (5) towards one end of the guide rod (2), and the position magnet (101) is arranged on the guide post cap (5).
6. 6. The electromagnetic drive type single-side riveting force and riveting speed monitoring device according to claim 5, wherein the position magnet (101) is arranged on the guide post cap (5) through a screw (6).
7. 7. The electromagnetic drive type single-side riveting force and riveting speed monitoring device according to any one of claims 1-6, wherein the force sensor (3) is ring-shaped, and the amplifier (10) and the punch (11) are connected through a connecting shaft (12) penetrating through the force sensor (3).
8. 8. The electromagnetic drive type single-side riveting force and riveting speed monitoring device as claimed in claim 7, characterized in that the distance between the punch (11) and the amplifier (10) is adjustable.
9. 9. The electromagnetic drive type unilateral riveting force and riveting speed monitoring device according to claim 8, wherein one end of the connecting shaft (12) is fixed with the amplifier (10), and the other end is in threaded connection with the punch (11).
10. 10. The electromagnetically driven single-sided riveting force and riveting speed monitoring device as claimed in any one of claims 1-6, 8, 9, wherein the force sensor (3) is a piezoelectric force sensor.

Description

Electromagnetic drive type unilateral riveting force and riveting speed monitoring device Technical Field The utility model belongs to the technical field of unilateral riveting, and particularly relates to an electromagnetic drive type unilateral riveting force and riveting speed monitoring device. Background The unilateral riveting is a process method capable of realizing dissimilar material connection through single-sided operation, does not need a prefabricated hole and a back support, is applicable to limited space where two sides cannot be contacted, and has the advantages of being outstanding in unilateral riveting. At present, the riveting technology is widely applied to the connection of dissimilar materials of automobile bodies, and based on the advantage of an electromagnetic driving mode, more and more unilateral riveting adopts electromagnetic driving at present. The riveting force and the riveting speed can reflect the qualification degree of the product and can provide references for the riveting force and the riveting speed under different products, so that the electromagnetic driving riveting process needs to monitor and acquire the riveting force and the riveting speed in real time. For monitoring of riveting force and riveting speed, the current common practice is to place the position of the force sensor below the die, namely the position of the sensor is not the position of the upper plate and the riveter thereof, and the monitoring mode is generally suitable for double-sided riveting, and the reliability of real-time monitoring data of single-sided riveting is lower. Disclosure of utility model The utility model aims to provide an electromagnetic drive type unilateral riveting force and riveting speed monitoring device, which aims to realize reliable monitoring of the riveting force and the riveting speed in electromagnetic drive type unilateral riveting and provide accurate and reliable data for optimization and quality control of a unilateral riveting process. The magnetostrictive displacement sensor is arranged above the coil, the guide rod penetrates through the coil to be connected with the amplifier, the axis of the guide rod and the axis of the magnetostrictive displacement sensor are positioned on the same straight line, the position magnet of the magnetostrictive displacement sensor is connected with the guide rod, and the force sensor is arranged between the amplifier and the punch. Still further, magnetostriction displacement sensor sets up on the support, the support is located the coil top, has seted up the through-hole on the support, magnetostriction displacement sensor wears to establish in the through-hole, guide bar one end wears to establish in the through-hole, and the other end is connected with the amplifier, position magnet is worn to establish with the guide bar one end in the through-hole and is connected. Furthermore, a matching hole is axially formed in one end of the guide rod penetrating through the through hole, and the magnetostrictive displacement sensor penetrates through the matching hole towards one end of the guide rod. Further, one end of the guide rod penetrating through the through hole is in sliding fit with the through hole in the axial direction. Still further, still include uide bushing and direction post cap, the uide bushing sets up on the inner wall of through-hole, direction post cap and uide bushing inner wall sliding fit, and the direction post cap sets up the one end of wearing to establish in the through-hole at the guide bar, magnetostriction displacement sensor wears to establish in the cooperation hole along the direction post cap towards the one end of guide bar, position magnet sets up on the direction post cap. Further, the position magnet is arranged on the guide post cap through a screw. Further, the force sensor is annular, and the amplifier and the punch are connected through a connecting shaft passing through the force sensor. Further, the distance between the punch and the amplifier is adjustable. Further, one end of the connecting shaft is fixed with the amplifier, and the other end of the connecting shaft is in threaded connection with the punch. Still further, the force sensor is a piezoelectric force sensor. The utility model has the beneficial effects that the magnetostrictive displacement sensor and the force sensor are both arranged on the riveter structure, and the amplifier drives the guide rod to move downwards when moving downwards, so as to drive the position magnet to move downwards, and the magnetostrictive displacement sensor detects the movement displacement in real time, so that a riveting speed-time curve is obtained. Meanwhile, in the riveting process, the riveting force is transmitted to the force sensor, so that an electric signal is obtained, a riveting force-time curve is finally obtained through corresponding data processing, reliable monitoring of the riveting force and the riveting speed in electro