Vibration cutting device and design method thereof

Abstract

The invention discloses a vibration cutting device and a design method thereof, and belongs to the field of biological tissue cutting. The vibration cutting device comprises a cutting part, a drivingpart and a guide part. The cutting part comprises a vibration mass block and a blade, and the vibration mass block and the blade do reciprocating linear motion as a whole under the action of the driving part. The guide part comprises a pair of guide blocks symmetrically connected to the first side face and the second side face, each guide block is provided with a double-parallelogram flexible mechanism, the guide part and the cutting part form a spring mass system, the inherent frequency of the system is the same as the driving frequency of the driving part, the system can resonate with the cutting part, and the amplitude of the blade is improved. The double-parallelogram flexible mechanism can eliminate deviation in the non-vibration direction, a guiding effect is provided for vibration of the cutting part so as to reduce parasitic motion errors caused by reciprocating linear motion, and therefore high-precision reciprocating linear motion of the blade is achieved.

Description

technical field [0001] The invention relates to the field of biological tissue cutting, in particular to a vibration cutting device and a design method thereof. Background technique [0002] In modern biological research and medical examination, it is often necessary to use cutting devices to make thin slices of biological tissue into certain thickness for further processing and observation such as immunohistochemistry, staining, and imaging. The vibrating cutting device can use a certain driving force to drive the blade to reciprocate and vibrate along the blade to tear soft biological tissue. At the same time, the blade feeds in the direction perpendicular to the vibration or the sample feeds in the direction perpendicular to the vibration to realize the slicing process. Tissues are cut into thin sections ranging from tens of microns to hundreds of microns. [0003] Vibration cutting devices in the related art generally use a group of single parallel flexible mechanisms c...

AI Technical Summary

Problems solved by technology

However, since one end of the flexible leaf spring of the guiding mechanism is fixed, the other end of the flexible leaf spring does not move strictly in a straight line during the vibration process. The movement track of the blade vibrating with the vibration end forms an arc on the horizontal plane, which affects the quality of the cutting section.

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