Flow pulse counter and application thereof

Abstract

The invention relates to the technical field of counters, in particular to a flow pulse counter. The flow pulse counter comprises a hydraulic motor, a rotating shaft, a photoelectric switch and a coded disc. Oil entering through an oil inlet pipeline drives the hydraulic motor to rotate, and the hydraulic motor drives the rotating shaft and the coded disc to rotate. The photoelectric switch counts the number of the seams through which the coded disc rotates, and then the volume of the oil entering the hydraulic motor is obtained through conversion, so that whether an oil cylinder is in place or not can be judged, and a numerical control system can more conveniently and accurately judge the position of a cutter beating piston. The problem that a proximity switch wire cannot penetrate through a milling head body and the problem of reliability of a pressure relay are solved. According to the detection method, whether the cutter beating of the multi-surface milling head of a numerical control machine tool is in place or not can be judged through the flow pulse counter, so that pressure relay signals are not needed, the detection method is accurate and reliable, and false triggering of the numerical control system is avoided.

Description

technical field [0001] The invention relates to the technical field of pulse counters, in particular to a flow pulse counter and its application. Background technique [0002] In the multi-faceted milling head of CNC machine tools, the spindle piston must have tool release and in-position detection when changing tools, otherwise it will easily lead to risks such as tool drop and damage to related parts of the tool magazine. However, due to the rotation of the two rotary axes in the universal milling head, the wires of the proximity switch cannot be connected to the electrical cabinet through the entire milling head body. Therefore, most milling heads judge the cutting tool indirectly through the pressure relay of the hydraulic system. Whether the cylinder is in place, that is, after the knife is in place, the oil pressure of the knife cylinder rises, causing the signal of the pressure relay to trigger, and this signal is used to judge that the piston is in place. This metho...

AI Technical Summary

Problems solved by technology

[0002] In the multi-faceted milling head of CNC machine tools, the spindle piston must have tool release and in-position detection when changing tools, otherwise it will easily lead to risks such as tool drop and damage to related parts of the tool magazine.

However, due to the rotation of the two rotary axes in the universal milling head, the wires of the proximity switch cannot be connected to the electrical cabinet through the entire milling head body. Therefore, most milling heads judge the cutting tool indirectly through the pressure relay of the hydraulic system. Whether the cylinder is in place, that is, after the knife is in place, the oil pressure of the knife cylinder rises, causing the signal of the pressure relay to trigger, and this signal is used to judge that the piston is in place

This method has great hidden dangers. For example, once the oil cylinder and piston are stuck and the knife is not in place, the signal of the pressure relay will also be triggered, resulting in misjudgment by the CNC system.

The existing pulse counter is not suitable for detecting whether the milling head is installed in place, and the existing pulse counter has a complex structure, inconvenient installation, and low precision

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