Title:
LINEAR MOTION VARIABLE RIGIDITY UNIT AND MACHINE TOOL
Document Type and Number:
Japanese Patent JP2017115986
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce driving energy to linearly reciprocate a linear reciprocating body.SOLUTION: A linear motion variable rigidity unit 1 has a linear motion-rotation conversion mechanism 10 having a screw shaft member 12 (linear motion input/output portion) and a nut 13 (rotary motion input/output portion), a variable rigidity mechanism 36 having a spiral spring 30 (elastic body) connected to a nut, a rigidity variable actuator 50 connected to the variable rigidity mechanism, a control device 60 for controlling the rigidity variable actuator, and a table support 120 (supporting member) for supporting the linear motion conversion mechanism, the variable rigidity mechanism and the rigidity variable actuator. The spiral spring accumulates input energy from a reciprocating table 130 (linear reciprocating body) through the linear motion-rotation conversion mechanism. The spiral spring releases the accumulation energy accumulated by itself, toward the reciprocating table through the linear motion-rotation conversion mechanism.SELECTED DRAWING: Figure 3
Inventors:
OTA HIROMITSU
Application Number:
JP2015252041A
Publication Date:
June 29, 2017
Filing Date:
December 24, 2015
Export Citation:
Assignee:
JTEKT CORP
International Classes:
F16H33/02; B23Q5/34; B23Q5/38; B23Q5/40; B24B47/04; F16H19/04
Attorney, Agent or Firm:
Okada International Patent Office
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