Independent-variable hydraulic tapping machine

Abstract

The invention provides an independent-variable hydraulic tapping machine, relates to the technical field of tapping equipment and solves the problems that workpieces are not qualified according to requirements caused by the fact that a no-go fixed gauge is usually not fixed when an existing tapping machine meets screw tap accumulated crumbs or when the workpieces are hard in materials. The independent-variable hydraulic tapping machine comprises a tapping mechanism. The tapping mechanism comprises a hydraulic motor, a screw tap sleeve and a screw tap, and an output spindle of the hydraulic motor is connected with the screw tap sleeve which is connected with the screw tap through a tap chuck; a hydraulic circuit of the hydraulic motor is connected with an oil tank, a pressure control valve and a reversing valve are arranged on the hydraulic circuit, and both the pressure control valve and the reversing valve are connected with the oil tank; the reversing valve is further connected with a variable pump power unit which is connected with a control switch. The problem that when the torque of the independent-variable hydraulic tapping machine increases rapidly in case that the screw tap meets the accumulated crumbs during tapping and machining is solved by automatically slowing down the tapping speed through an independent-variable control system and correspondingly increasing the torque outputted in tapping.

Description

technical field [0001] The invention relates to the technical field of tapping equipment, in particular to an independent variable hydraulic tapping machine. Background technique [0002] Tapping machines include manual tapping machines, pneumatic tapping machines, electric tapping machines, mechanical tapping machines and hydraulic tapping machines. During the working process of the tapping machine tap, when the tapping depth exceeds 1.5 times the nominal diameter of the tap, in most cases, light or heavy tap chip accumulation will occur; when the tap of the tapping machine encounters chip accumulation or workpiece When the material is hard, the required torque will increase sharply. If the torque exceeds the breaking strength of the tap, the tap will be broken and damaged; if the torque exceeds the torque limit of the tapping machine, the spindle of the ordinary hydraulic tapping machine will stop automatically. Rotation and hydraulic unloading, while the electric tapping...

AI Technical Summary

Problems solved by technology

[0005] The invention proposes an independent variable hydraulic tapping machine, which not only solves the problem in the prior art that when the tapping machine encounters chip accumulation on the tap or the material of the workpiece is hard, the stop gauge does not stop and the workpiece exceeds the upper limit. It also solves the problem of time-consuming and labor-intensive adjustment of gears when processing different threads with large diameter differences, which greatly improves the tapping processing efficiency.

Images