A Cam Tensioning Stiffness Adjustable Fast Knife Servo System
A servo system and cam technology, applied in metal processing equipment, metal processing machinery parts, manufacturing tools, etc., can solve the problems of asymmetric structural rigidity on both sides, affecting the precision of the fast knife servo system, etc., to achieve easy adjustment control, ultra-travel Long, easily controlled effects
Active Publication Date: 2020-08-04
SHANDONG UNIV
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Problems solved by technology
In the process of stiffness adjustment, the sleeves on both sides need to be adjusted separately, and the same magnitude of stress cannot be applied to the symmetrical leaf spring and leaf spring structure on both sides, so that the structural rigidity on both sides is asymmetrical, which affects the precision of the fast knife servo system.
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[0030] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0031] As introduced in the background technology, in order to make the dynamic characteristics of the existing fast-knife servo system adjustable, and to apply stress to the symmetrical flexible guide mechanism synchronously during the adjustment process, the present invention provides a fast-knife servo system with adjustable cam tension stiffness .
[0032] In a typical implementation of the present application, such as Figure 1-Figure 2 As shown, a fast knife servo system with adjustable cam tension stiffness is provided, including a fixed frame 1, a tool connecting block 13, a flexible guide mechanism 12, a stiffness adjustment ...
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The invention discloses a sharp-knife servo system with adjustable tensioning rigidity of cams. The sharp-knife servo system comprises a fixed frame, a cutter connecting block, flexible guide mechanisms, a drive mechanism and a cutter. The horizontally arranged cutter connecting block horizontally arranged is installed in the fixed frame, wherein the cutter is connected with one end of the cutterconnecting block, and the drive mechanism is connected with the other end of the cutter connecting block. The flexible guide mechanisms are arranged on the upper and lower sides of the cutter connecting block, wherein the cutter connecting block is fixedly connected with one ends of the flexible guide mechanisms, and the fixed frame is fixedly connected with the other ends of the flexible guide mechanisms through flexible hinges. The flexible guide mechanisms are symmetrically arranged up and down relative to the cutter connecting block. A through hole is formed in the center of the cutter connecting block, wherein a set of symmetrical cams is symmetrically installed at the two ends of a pin shaft after the pin shaft penetrates through the through hole. The outermost rings of the each setof symmetrical cams are in contact with the flexible hinges in a tangent mode. The pin shaft drives the cams to rotate under the action of external force, and the same stress is applied to flexible plate springs on both sides of the cutter connecting block through the rotation of the cams, and to realize the synchronization rigidity adjustment of the guide mechanisms.
Description
technical field [0001] The invention relates to a fast-knife servo system, in particular to a fast-knife servo system with adjustable cam tension stiffness. Background technique [0002] The fast tool servo system is the key technology in non-circular CNC turning and non-axisymmetric turning. It is used to process non-circular cross-section parts and non-axisymmetric (ie non-rotational symmetry) optical parts that are widely used in the mechanical industry and the optoelectronic industry. During the turning process, the spindle drives the workpiece to rotate, and the tool is driven by the fast tool servo system to reciprocate along the radial direction (for non-circular CNC turning) or axial direction (for non-axisymmetric turning) of the workpiece at a frequency associated with the spindle speed Feed movement, so as to process the non-circular cross-sectional profile or axisymmetric end face of the workpiece. In the fast knife servo system widely used at present, the guidi...
Claims
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IPC IPC(8): B23Q5/36
CPCB23Q5/36
Inventor 闫鹏陈宁李金银
Owner SHANDONG UNIV