A metal pipe cutting device

Abstract

The invention discloses a metal pipe fitting cutting device which comprises a cutting mechanism, a first clamping mechanism, a second clamping mechanism, a feeding mechanism and a rack. The first clamping mechanism comprises a bidirectional screw rod, a support seat, a second base and a clamping part; the second clamping mechanism comprises a rotary supporting bearing, a triangular fixed frame, aclamping tooth block, a connecting pillar, a supporting seat, a pinion, a locking stud, a locking block, a second motor, a sliding plate, a positioning stud and a bolt. In the cutting process, a metalpipe fitting rotates through the second clamping mechanism, and cutting points on the metal pipe fitting are ceaselessly changed during circumferential movement, so that the occurrence of the phenomena of throats and burrs caused by notch heat deformation and a unidirectional cutting feeding force is retarded. Through a combined clamping manner of the first clamping mechanism and the second clamping mechanism, only the degree of freedom of the metal pipe fitting rotating around a center shaft is kept, so that the metal pipe fitting cannot produce radial runout, and the cutting accuracy is improved.

Description

technical field [0001] The invention relates to the field of cutting and processing equipment, in particular to a cutting device for metal pipe fittings, in particular to a cutting device for thin-walled non-deformable metal pipe fittings. Background technique [0002] Grinding wheel cutting machine is a widely used processing equipment. Although the price is low and the operation is simple, when cutting metal pipe fittings, due to the low rigidity of the metal pipe fittings and the poor heat dissipation of the grinding wheel during the cutting process, it is easy to cause shrinkage and burrs on the incision of the metal pipe fittings, and the shrinkage length produced by cutting can reach the diameter of the pipe. One-fifth of the pipe diameter, the necking can reach one-tenth of the pipe diameter. [0003] The document with application number 201410324463.3 discloses a cutting system for thin-walled pipe fittings. The cutting system clamps the pipe fittings through the mo...

AI Technical Summary

Problems solved by technology

Although the price is low and the operation is simple, when cutting metal pipe fittings, due to the low rigidity of the metal pipe fittings and the poor heat dissipation of the grinding wheel during the cutting process, it is easy to cause shrinkage and burrs on the incision of the metal pipe fittings, and the shrinkage length produced by cutting can reach the diameter of the pipe. One-fifth of the pipe diameter, the necking can reach one-tenth of the pipe diameter

[0003] The document with application number 201410324463.3 discloses a cutting system for thin-walled pipe fittings. The cutting system clamps the pipe fittings through the movement of the positioning rod driven by the cylinder piston rod. There are multiple axial cooling holes on the cutter head; Only the pipe to be cut can be clamped, and the cut piece cannot be clamped, which will cause the cutting point to shift and produce burrs; and the cutting pipe will not move so that the same cutting point receives a large one-way cutting feed force and residual heat, so that A large shrinkage is produced; while the axial cooling holes on the cutter head are good for heat dissipation, but they do not directly dissipate heat to the blade, and the heat dissipation effect is poor

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