A Dimensional Consistency Compensation Method and Device Based on Casting Mold

Abstract

The invention discloses a dimensional uniformity compensation method and device based on casting molds. The dimensional uniformity compensation method and device based on the casting molds are mainlyapplied to the field of robot automatic polishing of castings. The method comprises the following steps that the casting molds are numbered, a polishing path is sectioned according to portions to be polished, parts cast by the different casting molds are chosen to be polished, and compensation values are determined according to the polishing effect; and when workpieces are grabbed, the position ofa piston of an air cylinder is acquired through a position sensor, the number of the mold of the current part is calculated by a PLC according to the simulation quantity of the position of the pistonand transmitted to a robot, and the robot calls the corresponding compensation value to conduct polishing. The dimensional uniformity compensation method and device based on the casting molds can compensate for the errors, caused by the dimensional uniformity errors of the casting molds, of the castings, the polishing accuracy and the polishing effect are improved, and the machining errors causedby the dimensional errors of the casting molds are avoided.

Description

technical field [0001] The invention relates to the field of casting grinding, in particular to a dimensional consistency compensation method and device based on casting moulds. Background technique [0002] Casting cleaning refers to grinding the flash and burrs on the parting surface of the casting. Do not over-grind during grinding, otherwise it will damage the casting body. Therefore, traditional grinding is done manually. The worker holds an angle grinder and an electric grinding gun. Processing is not only low in efficiency and high in cost, but also causes great damage to the health of workers. Therefore, robots are widely used for grinding now, which can not only improve processing efficiency, ensure processing accuracy, but also reduce grinding costs. [0003] However, due to the different molds used in the casting process, the errors of the cast parts are often different, but the errors of the parts cast by the same mold are basically the same, and the error direc...

AI Technical Summary

Problems solved by technology

When the robot is grinding, it is generally polished by an absolute path, so if all parts are polished using the programmed trajectory of the parts casted by a certain mold, the parts will be damaged and unnecessary losses will be caused.

[0004] The traditional grinding method has the following disadvantages: 1. Manual grinding is labor-intensive, long working hours, low in efficiency, and the consistency of the grinding effect is poor; 2. A large amount of dust generated during the manual grinding process has a serious impact on the environment and damages the human body; 3. The parts casted by different molds are not the same, which makes it easy to damage the workpiece when grinding with absolute trajectory; 4. The data processing ability of the robot control system is weak, the calculation results are inaccurate, and the cost of the analog input module for the robot is high;

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