Automatic accurate positioning method for large workpiece

A technology for precise positioning and large workpieces, applied in the direction of using feedback control, etc., can solve the problems of difficult to achieve automatic precise positioning requirements, difficult to ensure positioning accuracy, difficult to operate, etc., to achieve convenient measurement, easy promotion and application, and ensure processing quality. Effect

Inactive Publication Date: 2012-12-19
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general mechanical positioning method is difficult to meet the requirements of automatic and accurate positioning. In the past, most of the manual operations of "measurement ←→ correcting the workpiece position" were used to complete the positioning manually.

Method used

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  • Automatic accurate positioning method for large workpiece
  • Automatic accurate positioning method for large workpiece
  • Automatic accurate positioning method for large workpiece

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Embodiment Construction

[0023] In order to make the technical means, creative features, work flow, and use methods of the present invention achieve the purpose and effect easily understood, the present invention will be further described below in conjunction with specific embodiments.

[0024] figure 1 Shown is a schematic structural diagram of a platform device of a specific example of the present invention. As shown in the figure, the platform 7 includes: a roller table 6, which is used to transmit the workpiece 5 placed on the platform; a limit switch 2 is installed in the baffle plate 1, and the workpiece touches the limit switch to obtain the axial position positioning of the workpiece Signal: The four push rod systems include the servo motor 3 and the push rods connected together. The push rod system is driven by the servo motor, and the radial position of the workpiece on the platform is moved forward by driving the push rod. There is a pressure sensor 4 in front of the push rod, which can ob...

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PUM

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Abstract

The invention discloses an automatic accurate positioning method for a large workpiece. The automatic accurate positioning method is applicable to a large workpiece to be machined which has the following characteristics: the workpiece is rectangular and possibly has deviations on the contour dimensions of length, width and height, a positioning reference vertical surface is arranged on the top of the workpiece, and the workpiece needs to be moved and positioned in the horizontal plane. The automatic accurate positioning method comprises the following steps: (1), the workpiece is horizontally conveyed to a reference position in the axial direction by a roller way; (2), the radial position of the workpiece is subjected to preliminary positioning through a servo electric push rod; (3), the position deviation is measured, aiming at the positioning reference vertical surface; and (4), the servo electric push rod finishes accurate positioning according to the preliminary positioning parameters and the measured position deviation. The automatic accurate positioning requirement on the large workpiece in the machining process can be accurately and rapidly realized through the construction technique provided by the invention, the machining speed is effectively accelerated, the machining quality is ensured, the project safety is guaranteed, and the economic cost is reduced.

Description

technical field [0001] The invention relates to a method for precise positioning of large workpieces, which can perfectly solve the need in industrial processing for large-scale workpieces that may have a cuboid shape, length, width, and height. The problem of precise positioning of workpieces. Background technique [0002] In the carbon paste tamping process to realize the automatic assembly of electrolytic aluminum cathode carbon blocks, it is necessary to use pneumatic tools to tamp and compact the cathode paste filled in the gap between the carbon tank and the steel rod. The consistent tightness of rolling directly affects the quality of the entire assembly block. The cathode carbon block is a kind of cuboid shape, length, width, and height dimensions (reference value: 3260×520×480, weight: 1550kg), which may have deviations. The top-middle part of the workpiece is positioned with reference to the vertical plane and needs to be in the horizontal plane. Large workpieces...

Claims

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Application Information

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IPC IPC(8): G05D3/12
Inventor 彭辉张晋铭徐锦华曾启符勇杨鸿波
Owner CENT SOUTH UNIV
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