SU929289A1 - Thread rolling head - Google Patents

Description

(54) CARVING HEAD

I

The invention relates to the processing of metals by pressure, namely, devices for rolling conic threads, and can be used in pipe industry and in mechanical engineering.

A device for rolling tapered threads, comprising a thread rolling head with rollers mounted in a housing on the guide beds, an axial movement of the head and a mechanism for matching the axial movement of the head by the radial movement of the rollers 1 are known.

The disadvantage of this device is that it is not suitable for threading large parts, since the thread rolling head does not have the ability to rotate, and it is difficult to rotate the part.

The closest to the proposed technical solution is a thread rolling head for rolling a tapered thread, comprising a housing, in radial grooves of which sliders with thread rolling and rolling rollers placed on axes and a tapering mechanism, made in the form of a coupling with a copier fixed on it, are installed. mounted on the housing with the possibility of a copier in contact with rolling rollers 2.

ten

The disadvantage of this head is that the angle of turn of the thread rolling rollers in the same is constant, and the angle of elevation of the thread being rolled is variable. As a result of the mismatch

At the 15 angles indicated, there is an error in the profile of the turns and pitch.

The purpose of the invention is to increase the accuracy of the thread being rolled.

The goal is achieved by

20 that the thread rolling head for rolling a tapered thread, comprising a housing, in the radial grooves of which slides are mounted with

11TH in 1ShH on axles thread-rolling and rolling rollers, a tapering mechanism, made in the form of a coupling with copiers fixed on it, mounted on the body with the possibility of copiers contact with the rolling rollers, equipped with copy rollers mounted on the ends of the axes of the thread of the catal arms with the possibility of free rotation in the company

All curved grooves are made, copier rollers are placed in the specified grooves, and radial grooves are cylindrical. FIG. 1 shows a threaded screw thread - is a company on the head, a general view; FIG. 2, section A-A in FIG. one; in fig. 3. Section BB of FIG. one; in fig. 4, view B in FIG. 1. The thread rolling head includes a housing 1 in the radial cylindrical grooves of which sliders 2 are installed with axial rolling rollers 4 and 3 rolling rollers 4 on the axles and axial 5 rollers 6 on the axes 6. The rollers 8 are installed in them and the free on the ends of the axles 3; A mandrel 9 is located in the central opening of the housing 1, rigidly connected with the coupling 10 mounted on the housing. The copier 10 is fixed on the coupling 10. The screw 12 is designed to adjust the head to a given ji HaMeTp manufactured thread I3 - the coupling retainer. The work of the thread rolling head is as follows. The thread rolling head is fed to a rotating workpiece. The workpiece is guided by its end into the mandrel 9 and moves it axially relative to the housing 1 together with the coupling 10 and the couplings fixed to the coupling 11. The sliders 2 and the thread rolling rollers 4 placed in them receive a radial movement aligned with the axial one. Simultaneously kopirny. the rollers 8, moving along the grooves 7, turn the sliders 2 around its axis, changing the angle of inclination of the thread rolling rollers to the axis of the workpiece. At the end of the thread rolling, the rolling rollers 6 fall into the ends of the copiers 11 and the thread rolling rollers 4 are sharply diluted, freeing the workpiece, and the latch 13 fixes this position. The head is retracted, the blank 13 is pressed, while the mandrel 9 and the sleeve 10 are returned to the initial position and the cycle is repeated.

Claims (2)

As a result of the fact that the angle is broken and a new one is installed, the clamp of thread rolling rollers always corresponds to the elevation angle of the thread being rolled, the thread accuracy of the proposed head being rolled is higher than that of the known heads rolled up. sliders with reborbonatny and rolling rollers placed on them on axles, a tapering mechanism, made in the form of a coupling with attached to it Piers mounted on the body with the possibility of copier contact with rolling rollers, characterized in that, in order to increase thread accuracy, it is equipped with copy rollers mounted on the ends of the axes of the thread rolling rollers with the possibility of free rotation; in the grooves, and the radial grooves are cylindrical. Sources of information taken into account during the examination 1. USSR author's certificate No. 312663, cl. B 21 N 3/04, 1970. 2. USSR author's certificate number 539654, cl. In 21 N 3/02, 1975 (prototype).