CN-224216426-U - Impact position-adjustable drop hammer impact testing machine for self-piercing riveting joint

CN224216426UCN 224216426 UCN224216426 UCN 224216426UCN-224216426-U

Abstract

The utility model discloses a drop hammer impact testing machine with an adjustable impact position for a self-piercing riveting joint, and particularly relates to the technical field of testing machines, comprising a platform main body, a drop hammer assembly and a self-piercing riveting joint clamp; the self-punching riveting joint clamp comprises a clamp base, a clamp upper plate, a first gasket and a second gasket, wherein the clamp base is fixedly connected to the pedestal, the problem of complicated adjustment of the impact position in a self-punching riveting joint drop hammer impact test is solved, and meanwhile, the clamp of the drop hammer impact test machine is specially adapted to the self-punching riveting joint, so that the joint is more convenient and stable in clamping, and the test efficiency is greatly improved.

Inventors

LEI LEI
WANG LIANGRONG
WANG WEIQIANG
ZHOU JUNJIE

Assignees

沈阳工业大学

Dates

Publication Date: 20260508
Application Date: 20250610

Claims (4)

1. The drop hammer impact testing machine for the self-piercing riveting joint with the adjustable impact position is characterized by comprising a platform main body, a drop hammer assembly and a self-piercing riveting joint clamp; the platform main body comprises a pedestal (1) and a guide rod (2), the guide rod (2) is fixedly connected to two ends of the pedestal (1), and the drop hammer assembly is arranged on the guide rod (2) in a sliding manner; The drop hammer assembly comprises a drop hammer bearing platform (11) and a drop hammer body (12), a first limiting groove (13) for placing the drop hammer body (12) is formed in the middle of the drop hammer bearing platform (11), and the drop hammer body (12) slides along the first limiting groove (13) so as to adjust the drop hammer position; The self-piercing riveting joint clamp is arranged on the pedestal (1) and is opposite to the drop hammer assembly.
2. The drop hammer impact testing machine for the self-piercing riveting joint with the adjustable impact position according to claim 1, wherein the self-piercing riveting joint clamp comprises a clamp base (21) and a clamp upper plate (22), the clamp base (21) is fixedly connected to the pedestal (1), and a limit groove IV (25) for drop hammer impact is formed in the middle of the clamp upper plate (22).
3. The drop hammer impact testing machine for the self-piercing riveting joint with the adjustable impact position according to claim 1, wherein the bottom of the drop hammer body (12) is provided with a threaded hole, and two sides of the limit groove I (13) are provided with a limit groove II (14) and a limit groove III (15) for the drop hammer body (12) to be in bolted connection with the drop hammer bearing platform (11).
4. The drop hammer impact testing machine for a self-piercing riveting joint with an adjustable impact position as claimed in claim 2, wherein the self-piercing riveting joint clamp further comprises a first gasket (23) and a second gasket (24), the first gasket (23) is connected with the middle part of the right end of the upper clamp plate (22) through gluing, the second gasket (24) is connected with the middle part of the left end of the clamp base (21) through gluing, and the upper clamp plate (22) is connected with the clamp base (21) through bolts.

Description

Impact position-adjustable drop hammer impact testing machine for self-piercing riveting joint Technical Field The utility model belongs to the technical field of testers, and particularly relates to a drop hammer impact tester with an adjustable impact position for a self-piercing riveting joint. Background The self-piercing riveting is used as a novel plate connecting technology, the forming process does not need pretreatment, the cold forming technology is used for forming an interlocking structure between the rivet and the upper plate and the lower plate through stamping, the joint has high mechanical strength and good fatigue resistance, is suitable for connecting various materials, and is the connecting technology with the highest application value at present, so that the self-piercing riveting is widely used for connecting automobile body materials. During the service cycle of a vehicle, the vehicle body structure is inevitably subjected to various external loads such as impacts, collisions and the like, but for the vehicle body structure, the impacts mainly originate from low-speed impacts, such as impacts of gravel and stones raised during running on the vehicle body, impacts of hail on the vehicle body under severe weather and the like, the speeds of these impacts are generally in the range of 1-10m/s and the impact energy is generally lower than 30J, and the positions at the time of impact on the vehicle body have a large randomness. Therefore, the impact bearing capability research of the self-piercing riveting joint in different position areas is very necessary, and the drop hammer impact testing machine adopted in the current research still has the following defects: 1. At present, the self-piercing riveting joint drop hammer impact test adopts a general drop hammer impact tester, which is generally used for testing the impact resistance of a whole material, and is generally fixed at the center position of a bearing platform, if the self-piercing riveting joint drop hammer impact tester is used for testing the impact resistance of the self-piercing riveting joint, the self-piercing riveting joint drop hammer impact tester can only be used for impacting a riveting center point, and if other positions need to be impacted, the adjusting process is very complicated, and the test efficiency is reduced. 2. When the universal drop hammer impact testing machine clamps the self-piercing riveting joint, the clamp is not specially adapted to the self-piercing riveting joint, so that the clamping is very inconvenient, and the testing efficiency is reduced. Therefore, there is a need for a drop hammer impact tester that can adjust the impact position and that is easy to operate with a clamp that is adapted to a self-piercing rivet joint. Disclosure of Invention The utility model aims to provide a drop hammer impact testing machine with an adjustable impact position for a self-piercing riveting joint, which solves the problems of the existing general drop hammer impact testing machine that a clamp is not adapted and the impact position is fussy to adjust when the drop hammer impact testing of the self-piercing riveting joint is carried out, and effectively improves the efficiency and convenience in the test. In order to achieve the above purpose, the present utility model provides the following technical solutions: a drop hammer impact testing machine with an adjustable impact position for a self-piercing riveting joint comprises a platform main body, a drop hammer assembly and a self-piercing riveting joint clamp; The platform main body comprises a pedestal and guide rods, the guide rods are fixedly connected to two ends of the pedestal, and the drop hammer assembly is arranged on the guide rods in a sliding manner; the drop hammer assembly comprises a drop hammer bearing platform and a drop hammer body; the self-piercing riveting joint clamp comprises a clamp base, a clamp upper plate, a first gasket and a second gasket, wherein the clamp base is fixedly connected to the pedestal. Preferably, the screw hole has been seted up to drop hammer body bottom, drop hammer load-bearing platform middle part has been seted up and has been placed the spacing groove one of drop hammer body, spacing groove two and spacing groove three that supply drop hammer body and drop hammer load-bearing platform to carry out bolted connection have been seted up to spacing groove one both sides, through the cooperation of three spacing grooves, just can be according to the different adjustment drop hammer of required impact position and put the position. Preferably, the limit groove IV for the impact of the drop hammer is formed in the middle of the upper plate of the clamp, the limit groove IV corresponds to the limit groove I of the drop hammer bearing platform, the drop hammer after the impact position is adjusted can impact the appointed position, the gasket I is connected with the middle of the right end of the upper plate of