An automatic pneumatic hammer riveting device with controllable impact force

Abstract

The invention discloses an impact force controllable pneumatic hammer riveting device. A cylinder main body and a cylinder secondary body are arranged on a bottom plate. Cylinder front and rear air holes are formed in the cylinder main body. A cylinder main rod is sleeved with the interior of the cylinder main body. A plurality of inner grooves are formed in the cylinder main rod. A gear spiral slotted disc is mounted on the outside of the cylinder main body. A gear of a servo motor is engaged with a gear ring of an annular groove of the gear spiral slotted disc. The gear spiral slotted disc is provided with a plurality of archimedes spiral grooves. A sleeve compressed spring assembly matched with the archimedes spiral grooves is arranged in front of the gear spiral slotted disc and comprises a roller compressed spring, a sleeve, a roller supporting rod and a roller. A punch hammer is movably mounted in a horizontal central through hole of the cylinder secondary body. According to theimpact force controllable pneumatic hammer riveting device, the air accumulation pressure of an air accumulation cavity can be regulated, the pressure difference between the air pressure on the two sides of the cylinder main rod is changed, the impact force of the punch hammer is controlled, the stability of impact energy is guaranteed, high-precision efficient pneumatic hammer riveting can be achieved, and the impact force controllable pneumatic hammer riveting device has the characteristics of zero oil pollution and convenient carrying.

Description

technical field [0001] The invention belongs to a pneumatic hammer riveting device in the technical field of pneumatics, and relates to a pneumatic hammer riveting device with controllable impact force. Background technique [0002] With the rapid development of the aviation industry, as the main connection method of aviation thin-walled parts, riveting and its equipment and technology have also received more and more attention and promotion. Both domestic and foreign scientific research and industrial practice have shown that riveting force or energy control is more conducive to the fatigue resistance of riveted joints than traditional riveting displacement control. [0003] Pneumatic riveting is the longest and most widely used riveting technology in current aviation manufacturing. Due to its advantages of strong flexibility, stable performance, clean and pollution-free, etc., it still occupies an extremely important position in the connection of aviation thin-walled parts...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a controllable impact force pneumatic riveting tool for pneumatic riveting to improve the anti-fatigue characteristics of riveted joints by controlling the riveting force, and to overcome the shortcomings of traditional riveting guns such as small impact force, high impact times, and difficulty in precise regulation. Hammer riveting device

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