Precision compensation system

Abstract

The invention provides a precision compensation system, and belongs to the technical field of chip mounters. The precision compensation system comprises a track, a grabbing unit, a CCD camera, an image processing unit, a compensation processing unit and a controller. The grabbing unit in the invention grabs a pre-set component and conveys the pre-set component to the position of a work-piece to mount; the structure is simple; operation is convenient; the CCD camera shoots an initial image and a real-time image running by the grabbing unit at the pre-set time; the image processing unit respectively processes the initial image and the real-time image into an initial coordinate and a real-time coordinate of the grabbing unit; the compensation processing unit sets a mark coordinate at the pre-set coordinate while moving along the connection line between the initial coordinate and the work-piece, and simultaneously, calculates the average value of the deviation value sum respectively according to the deviation value of the real-time coordinate of each contour point of the grabbing unit and the mark coordinate; according to the deviation average value, the grabbing unit is controlled tocompensate the deviation average value; the precision is relatively high; the structure is simple; and operation is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of placement machines, and relates to a precision compensation system. Background technique [0002] The placement machine is also called "mounting machine". In the production line, it is configured after the glue dispenser or the screen printing machine. It is a device that accurately places the components on the PCB by moving the placement head. The automatic placement machine is a device used to achieve high-speed and high-precision placement of components. It is the most critical and complex device in the production of the entire Surface Mount Technology (SMT). The placement machine has developed from an early low-speed mechanical placement machine to a high-speed optical alignment placement machine, and has developed towards a multi-functional, flexible connection modularization. [0003] At present, the placement machines used in the industry can only be applied to the placement of standard components...

AI Technical Summary

Problems solved by technology

However, in the placement process of existing placement machines, it often occurs that after the placement head picks up the electronic components, the electronic components cannot be accurately located in the center of the placement head, nor can they be picked up on the placement head in a prescribed posture. If the placement is carried out at this time, otherwise there will be some problems of low placement accuracy and poor placement performance

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