Automatic abrasive quantity detection system and pre-mixed abrasive water-jet numerical-control cutting machine

Abstract

The invention discloses an automatic abrasive quantity detection system and a pre-mixed abrasive water-jet numerical-control cutting machine. The system comprises a support, a high pressure abrasive tank (3), a fixing device (4), a single-point weighing sensor (7), a numerical control circuit (8) and a host (9), wherein the single-point weighing sensor (7), the numerical control circuit (8) and the host (9) are in successive electrical connection, the high pressure abrasive tank (3) is placed vertically, the upper part of the high pressure abrasive tank (3) sleeves the top of the support, the center of the bottom of the high pressure abrasive tank (3) is provided with a spherical groove inwardly protruding, the bottom of the single-point weighing sensor (7) is fixed at the bottom of the support, the top of the single-point weighing sensor (7) is located in the spherical groove at the bottom of the high pressure abrasive tank (3), and the fixing device (4) sleeves the periphery of the tank wall, higher than the top surface of the support, of the high pressure abrasive tank (3) and is fixed on top surface of the support through positioning bolts (1). The system can detect the quantity of an abrasive in the pre-mixed abrasive water-jet high pressure abrasive tank in real time so as to guarantee cutting quality and improve work efficiency.

Description

technical field [0001] The invention relates to an automatic detection system for the amount of abrasive used in a high-pressure abrasive tank, and is especially suitable for a pre-mixed abrasive water jet numerical control cutting machine tool. Background technique [0002] The formation principle of the pre-mixed abrasive water jet is to feed the mixing device through an abrasive, so that the high-pressure water and the abrasive are fully mixed to form a liquid-solid two-phase flow. This mixing method strengthens the mixing effect of the abrasive and the water medium, so that the abrasive particles are fully accelerated in the water medium, so the abrasive particles have extremely high kinetic energy, and its cutting performance is several times that of the post-mixed abrasive water jet. However, since the high-pressure abrasive tank is sealed, it is impossible to visually observe the remaining amount of abrasive in the tank, and the automatic detection of the amount of ab...

AI Technical Summary

Problems solved by technology

When adding material to the high-pressure abrasive tank, it is only judged whether the abrasive in the high-pressure abrasive tank has been filled by whether the abrasive in the return water of the return pipe overflows at the same time, but this is easy to cause misjudgment

Because: (1) Because the fine abrasive floats and overflows with the return water, it is misjudged that the abrasive in the high-pressure abrasive tank is full, which affects the cutting material supply; (2) Sometimes due to negligence in operation, excessive feeding causes sand accumulation in the side pipe; (3) Because the operator cannot judge the amount of abrasive in the high-pressure abrasive tank, it often causes damage to the workpiece due to no abrasive operation

Images