Oil-pump-free hydraulic vibration exciter with adjustable frequency and amplitude and adjusting method thereof

Abstract

The invention discloses an oil-pump-free hydraulic vibration exciter with an adjustable frequency and amplitude, and an adjusting method thereof, and belongs to the dynamic auxiliary plastic processing field. By using the oil-pump-free hydraulic vibration exciter with the adjustable frequency and amplitude, a tapered roller is cooperated with a conjugate end surface cam to convert rotation of a motor into reciprocating linear motion of a vibration exciter piston rod in a cylinder body, hydraulic oil in the cylinder body acts on a hydraulic cylinder piston through a valve body, and a motion frequency of the hydraulic cylinder piston changes along with a rotation speed of the motor so that the frequency is adjusted. A flow of the valve body is adjustable, and the flow of hydraulic oil flowing into the hydraulic cylinder body can be adjusted so as to adjust the amplitude of the hydraulic cylinder piston. The oil-pump-free hydraulic vibration exciter with the adjustable frequency and amplitude is compact in structure and simple in form, a hydraulic pump station and a complex reversing system are not needed, stepless adjustment of the amplitude and the frequency of the vibration excitercan be achieved, and the hydraulic vibration exciter can be applied to large-load vibration assistance. The adjusting method of the invention is simple to operate.

Description

technical field [0001] The invention belongs to the field of dynamic assisted plastic processing, in particular to a hydraulic vibration exciter without an oil pump, adjustable in frequency and amplitude, and an adjustment method thereof. Background technique [0002] Vibration plastic processing is an emerging interdisciplinary subject developed in the field of plastic forming by using vibration in recent years. The coupling of vibration field and plastic force field can significantly reduce material flow stress, reduce friction, improve material structure and surface quality, and It has the integration of forming and forming. Vibratory plastic processing technology has great advantages in the processing of difficult-to-form materials, and is widely used in the field of micro-forming of metal materials such as titanium alloys and magnesium alloys. However, at present, the vibrators used in vibration-assisted plastic processing technology are mainly ultrasonic exciters. The...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantage that the existing vibration exciter is difficult to apply to large load vibration assistance, and to provide a hydraulic vibration exciter with no oil pump, adjustable frequency and amplitude and its adjustment method

Images