SU1284702A1 - Portable machine for cutting pipes - Google Patents

Abstract

The invention relates to the processing of materials by cutting and can be used in shipbuilding, power engineering, mechanical engineering and other industries. The aim of the invention is to simplify the design of the machine by simplifying the design of the cutter feed mechanism. On the case I of the machine, there is a faceplate 2, in the arcuate grooves 7 of which are placed the crackers 10 of the toolholders II, spring-loaded 12 relative to the faceplate 2. The tool holder 14 is attached to a rod 14 of antifriction material, which is supported on the ring 15 fixed to the body 1 and provided with cutting elements 16. During the rotation of the plate 2, the rod 14 runs over the cutting element 16 of the ring 15, a part of the rod is cut and the cutter 9 together with the tool holder 11 under the action of the spring 12 cuts into the pipe being machined. the rank of the cut-off part 1 n. f-ly, 3 ill. with P

Description

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The invention relates to the processing of materials by cutting, in particular to pipe cutting machines, and can be used in shipbuilding, power engineering, mechanical engineering and other industries.

The purpose of the invention is to simplify the design of the machine by simplifying the design of the cutter feed drive, made in the form of a ring fixed to the body with cutting elements that can interact with a support rod fixed to the tool holder.

FIG. I depicts a portable pipe cutting machine, general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 shows the node I in FIG. one.

A portable pipe cutting machine comprises a body 1, a faceplate 2 and a drive 3 of the rotation of the faceplate 2. The latter, together with the drive gear 4, is rotatably mounted on the annular guide 5 by means of the ring 6. The plate face 2 is made with arcuate grooves 7, which have different the radii, for example, Ri and R2, are given from one center Oi so that the angle COiD is equal to the angle COD, i.e. the central angles formed by the radii drawn from the center O of the pipe 8 being machined and the center Oi of the guide arcs and resting on trajectory ends the tips of the cutter 9 are equal to each other, which ensures, when processing, the path of movement of the cutting edge of the cutter 9 with constant cutting angles.

The grooves 7 of the plate 2 include crackers 10 attached to the tool holder 11, which is made in the form of a segment-shaped plate. The tool holder 11 is spring-loaded with spring 12 relative to faceplate 2. Spring 12 serves to create an initial force of pressing cutter 9 to the machined pipe 8. The machine feed mechanism is made in the form of a rod 14 made of anti-friction material, such as caprolon, supported by a spring on the tool holder 11 12 to the ring 15. The axis of the rod 14 passes through the tip of the cutter 9 and the center of the plate 2.

The ring 15 mounted on the housing 1 concentrically processed pipe 8, has a cutting element 16, made, for example, in the form of a sharp edge of the ring 15 after the cut 17. The cutting elements 16 may be several. Above the surface and the ring 15, the cutting element 16 (or several cutting elements) protrude in total by the amount of feed S.

FIG. 1, an arrow V shows the main movement — the rotation of the faceplate 2; an arrow Vs — the direction of movement of the toolholder 11.

A portable pipe cutting machine operates as follows.

From drive 3, faceplate 2 is rotated. The rod 14 of the toolholder 11 under the action of the spring 12, resting on the ring 15 of the housing 1, slides over the ring 15. When running around the cutting edges 16 of the ring 15 from the rod 14, one turn of the washer 2 reduces the layer equal to the value S - feed rate. Vertex

the cutter 9 together with the tool holder 11 under the action of the spring 12 moves in the radial direction by the magnitude S and crashes into the machined pipe 8. In the subsequent, under the action of cutting forces, the cutter 9 is drawn inside the wall of the machined pipe 8, but at the same time is held by the rod 14 resting on the ring 15. The cutter 9 feeds into the S 4 root when cutting the rod 14 with the cutting elements of the ring 15 protruding totally above the surface a of the ring 15 by the value S. The tip of the cutter 9 describes the arc CD relative to the center Oi, while cutting angles about tayuts constant, because the angle variation of SOD cutting angles equal received corrective corner cutter povo5 company CO D. This is accomplished in the embodiment tangential turning associated flyweights -. Moreover, the closure of the AIDS system and the feed force are provided by the cutting forces, the feed amount is provided by the rod dispersing speed, and the feed amount is controlled by the magnification of the ring cutting edge above the cylindrical contact surface of the rod and ring on the machine body.

The proposed implementation of the feeder cutter simplifies the design of the machine, increasing its reliability and maintainability.

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Claims (2)

1. A portable pipe cutting machine, comprising a housing on which a faceplate is mounted for rotation, in grooves of which tool holders with cutters are placed, as well as a cutter feed mechanism, characterized in that, in order to simplify the machine design, the cutter feed mechanism ring mounted on the housing and provided with cutting elements protruding above the generatrix of the ring and having the ability to interact with the rod inserted into the device mounted on the tool holder in such a way that the axis of the rod pro walks through the cutter's vertex and center of rotation of the plate, with the tool holder being spring-loaded relative to the faceplate. 2. Machine according to claim 1, characterized in that the rod is made of an anti-friction material.  fnobtpHymo) f. / 3 Figg  eight FIG. H