Omnidirectional high-accuracy spatial direction fine tuning device

A technology of spatial pointing and fine-tuning device, which is applied to the parts, instruments and other directions of the instrument, can solve the problem that the pointing mechanism is difficult to meet the requirements of use, and achieve the effect of precise fine-tuning and fine-tuning of the pointing.

Inactive Publication Date: 2009-12-16
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, it is difficult to meet the requirements of use with traditional pointing mechanisms

Method used

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  • Omnidirectional high-accuracy spatial direction fine tuning device

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Embodiment Construction

[0017] See attached figure 1 , This embodiment of the present invention is made of a 65Mn type steel pipe with an outer diameter of ￠60mm to make a cylindrical support 2 with a circular flange at one end, and the inner diameter of the support 2 is ￠50mm. The cylindrical surface of the support 2 is provided with a spiral groove 21 axially around the column, and a through hole 22 is provided at the same time for wiring. The bottom plate 3 is cut from an aluminum alloy plate with a thickness of 12mm, is circular, and is fixed on the end face flange of the bracket 2 by coaxial screws. Three piezoceramic drivers 1 are piezoceramic drivers imported from German PI company with the type PSt150 / 10 / 60VS15-VbS, radially and evenly distributed in the bracket 2, one end of which is respectively fixed to the bracket by screws At the bottom of the cylinder of 2, the other end is provided with ball head 11 respectively, and the corresponding ball head 11 of its end of adjusting screw 4 estab...

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Abstract

An omnidirectional high-accuracy spatial direction fine tuning device is disclosed, which has a soleplate (3) and a cylindrical bracket (2). The bracket (2) is inside provided with three piezoelectric ceramic drivers (1) which are radially evenly distributed in a radial direction. One end of the piezoelectric ceramic driver (1) is fixedly connected to the bottom of the bracket (2) while the other end thereof is hinged with the soleplate (3). The three piezoelectric ceramic drivers (1) are hinged with the soleplate (3) via a ball (11) and a ball socket (41), respectively. Moreover, the cylindrical surface of the bracket (2) is provided with a helical groove (21). On account of the helix-shaped groove, namely the helical groove, arranged on the bracket in the invention, the bracket is endowed with elastic deformation and resetting ability; by respectively driving the three piezoelectric ceramic drivers to perform straight-line displacement, the soleplate, namely a normal line of an outer end face of a carrying platform, can be accurately controlled to swing towards any spatial orientation, thus realizing accurate fine tuning direction.

Description

technical field [0001] The invention relates to a space pointing mechanism, in particular to an all-round high-precision space pointing fine-tuning device for the mechanism. Background technique [0002] Achieving pointing motion in space is a basic requirement for various devices in aerospace engineering applications. The traditional two-axis orthogonal turntable space pointing device has low positioning and pointing accuracy due to the comprehensive influence of design calculation errors, machining errors, assembly errors, random errors, and fit clearances. In the field of optical communication, the antenna drive mechanism and the attitude control mechanism of the missile seeker require that the platform on which it is carried can achieve precise pointing and positioning in the omni-directional space on the order of milliradians. Obviously, it is difficult to meet the requirements of use by adopting the traditional pointing mechanism. As a solution, a high-precision fine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G12B5/00
Inventor 潘存云徐小军李强邓豪易声耀张湘郭坤州
Owner NAT UNIV OF DEFENSE TECH
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