SU956165A1 - Multitool head - Google Patents

Description

(54) MULTIPLE HEAD

one

The invention relates to the field of metalworking, in particular to multi-cutter heads, designed for turning over a copy of parts such as rotation bodies on automatic lathes and other turning and special machines.

A known multi-cutter head comprising a body mounted for axial movement of a spring-loaded copier associated with an abutment designed to interact with the workpiece, and tool holders mounted in the body movable along a circular arc and in contact with the copier 1.

The known head creates risks on the machined surface of the parts and has insufficient rigidity, since the tool holders are made in the form of double-arm levers and when retracted to the initial position, the cutters remain in constant contact with the machined surface, which leads to a deterioration in the quality of the machining.

The aim of the invention is to eliminate the formation of scratches on the treated surface and increase the rigidity of the head.

This goal is achieved by the fact that, in the proposed head, the tool holders are made in the form of sliders installed in guides made in the housing, and the copier is made in one piece with the support and in the form of a stem inserted into the cylinder head with the piston head. The die is placed between the spring of the copier and the stem, and a flange is formed on the stem, forming a gap with the chamber surface intended for the flow of oil in the cylinder.

ten

FIG. 1 shows a longitudinal section of the head; in fig. 2 is a view A of FIG. one.

Claims (1)

The multi-cutter rotary copying head includes a body 1, inside of which body sliders 2 are placed in the radial directions of the body, carrying the cutter 3 at one end and the probe 4 in constant contact with the copier shaped surfaces 5 at the other end. One end of the copier 5 in contact with the workpiece. The other is made in the form of a rod, placed in a chamber filled with oil and made in cylinder 6 attached to housing 1. In the chamber of cylinder 6 there is a piston 7 pushed by a spring 8 and a cover 9 in the direction of the copier 5. The head works as follows. When you turn on the work feed copier 5 ensures the operation of each cutter 3 with a given allowance. Before starting the copier 5 in the head is pushed to the extreme right position. When approaching, the part rests against the abutment of copier 5 and, with further movement, moves copier 5 to the left. With the surface of the copier 5 is constantly in contact n; pack 4, which, acting on the slider 2, moves it along the guides and informs the cutter 3 of the radial displacement will processing the details. When moving to the left, copier 5 acts on shreds 7, moving it to the left. At the same time, the spring 8 is compressed, and the oil through the gap between the collar of the copier 5 and the cylinder 6 passes from the cavity B to the cavity B. At the end of the working stroke, the cutters 3 move away from the surface to be processed, and the part quickly starts to move to its original position. The part departs from the stop of the copier 5. Under the influence of the spring 8, the piston 7, acting on the copier 5, will move it to the extreme right position. The oil from cavity B goes into cavity B, playing the role of a hydraulic retarder, does not allow the copier 5 to return to extreme right position at high speed. Copier 5, acting on the probe 4, moves the slider 2 with the cutter 3 to its original position. In connection with the possibility of machining shaped and threaded surfaces with this head for non-rotating parts, it is preferable to use ll of machining of parts with a large imbalance, non-rigid long shafts with two ends at the same time with two heads, all kinds of trunnions, turning them in the usual way on lathes difficult. Thus, the rigidity of the head and the quality of processing increased. Claims of the invention A multi-cutter head comprising a body mounted in the body with the possibility of axial displacement of a spring-loaded copier associated with a stop intended to interact with the workpiece, and tool holders mounted in the body with the ability to move along an arc of a circle and in contact with the copier. characterized in that, in order to eliminate the formation of scratches on the treated surface and to increase rigidity, the tool holders are made in the form of sliders. installed in guides made in the housing, and the copier is made in one piece with the abutment and in the form of a rod inserted into the cylinder head with a piston, while the piston is placed between the spring of the copier and the rod, and on the rod there is a shoulder that forms the surface of the cylinder the clearance to flow oil in the cylinder. Sources of information taken into account in the examination 1. USSR author's certificate 156028, cl. B 23 B 29/24, 1962.