Centering clamping mechanism of CNC (Computerized Numerical Control) drilling machine of pipe fittings

Abstract

The invention relates to a centering clamping mechanism of a CNC (Computerized Numerical Control) drilling machine for pipe fittings, arranged on a drilling platform of the CNC drilling machine. The centering clamping mechanism of the CNC drilling machines for pipe fittings comprises two clamping blocks which are arranged at both sides of the circumference of a pipe fitting and can move along the horizontal diameter direction of the pipe fitting, nuts are arranged at the lower parts of the two clamping blocks and engaged with a positive and negative screw mandrel which has two sections of opposite threads and is supported by the middle of a supporting seat, the supporting seat is fixedly connected with the drilling platform, and a rotating motion driving mechanism is arranged at one end of the positive negative screw mandrel. According to the invention, the positive negative screw mandrel is driven to rotate by adopting a hydraulic motor, the clamping blocks at both sides are driven to simultaneously homodromously or oppositely move and rapidly finish the centering and clamping action to the symmetrical outer walls of a cylinder, a hydraulic motor controls and drives the centering and clamping action through a hydraulic station, the action and the speed can be accurately controlled through a CNC console and the automation requirement with high efficiency is accurately satisfied, and the pipe fitting can be slowly and effectively clamped hydraulically to prevent mechanical clamping from causing impact and damage to the pipe fitting.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a numerically controlled drilling machine for processing side wall holes of pipe parts. Background technique [0002] Pipe parts such as boiler headers need to process many through holes or blind holes on the pipe wall of the round pipe. The numerical control drilling machine for pipe fittings developed by the applicant clamps both ends of the pipe fittings on the workbench through a rotary chuck, and the drilling platform It is movably arranged on the workbench. The clamping assembly and the drilling power head assembly for processing the pipe are arranged on the drilling platform. The clamping assembly includes a first clamping block and a second clamping block arranged on both sides of the pipe. The screw feed wheels on both sides can be manually shaken to make the clamping block move relative to the horizontal diameter of the pipe, and hold or loosen the pipe; the drilling power ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of the above-mentioned existing numerical control drilling machine for pipe fittings, such as manual adjustment of the clamping block, which takes a long time, low efficiency, and poor safety, etc., the applicant provides a centering and clamping mechanism of the numerical control drilling machine for pipe fittings controlled by hydraulic pressure, which can quickly and safely align the pipe fittings outer wall for clamping

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