SU1646694A1 - Turret head - Google Patents

Abstract

The invention relates to a machine tool industry and can be used on lathes for automatic tool change. The aim of the invention is to improve the reliability of the turret, the head includes a housing 1, a shaft 2 with a faceplate 3, face gear half couplings 4, 5 and 6, a sleeve 7 with a ring gear 8 and a worm wheel 9 mounted on the sleeve 9. A cross is fixed on the shaft 2 11 of the Maltese mechanism, the carrier 12 of which with two rollers is kinematically associated with a shaft rotational drive by means of a gear wheel 15 and a rim 8. An end cam 16 is fixed to the worm gear 9, and clamping rollers 18 are mounted on the ring 17 to interact with this cam. Between the closing coupling half 6 and the ring 17 there is a package of disc springs 19. When the face cam and carrier rotate, the coupling half 4, 5 and 6 are disengaged, the faceplate is rotated and its clamp B is in the desired position by means of the half coupling of the cam, rollers and the package of belleville springs. 2 Il. % (/

Description

The invention relates to machine tools and can be used on machines of the turning group for automatic, automatic tool change.

The aim of the invention is to increase the reliability of the turret by eliminating the possibility of spontaneous rotation of the faceplate at the time between positioning and fixing the faceplate.

In FIG. 1 shows a turret, longitudinal section; in FIG. 2 is a section AA in FIG. 1.

The turret includes a housing 1, a shaft 2 with a faceplate 3 mounted on it, mounted in the housing for rotation and fixed from axial movement. The concentric located mechanical half-couplings 4 and 5 are rigidly fixed on the body and on the shaft, and the axial mechanical gear half-coupling 6, designed for fastening with the coupling halves 4 and 5, is mounted axially movable on the shaft 2 and mounted rotatably and fixedly from axial movement of the sleeve 7 with a cylindrical gear ring 8, and on it is fixed a worm gear 9, which is engaged with the worm 10 of the drive shaft rotation 2o On the shaft 2 is fixed a cross 11 of the Maltese mechanism, and in the housing with The carrier 12 of this mechanism was installed with rotation, with two rollers 13 located symmetrically with respect to the axis of the carrier, with the possibility of covering protrusions 14 on the cross 11 on both sides. By means of a gear wheel 15, the carrier was kinematically connected to the gear ring 8 of the sleeve 7 °. An end cam 16 is fixed to the worm wheel 9 and the shaft 17 is mounted with the possibility of axial displacement and fixed against rotation, the ring 17 with the clamping rollers 18, designed to interact with the end cam 16 "Between the closing coupling half 6 and the ring 17 a set of Belleville springs 19 is installed, designed to create the necessary effort in the engagement of the gear half-couplers when the clamping rollers 18 interact with the end cam GB. To disengage the locking half-coupling 6, springs 20 are mounted on fingers fixed in the half-coupling 5 and placed in the holes made in the closing half-coupling 6

The turret works ’as follows.

When the worm wheel 9 is rotated by the worm 10 from the drive, the clamping rollers 18 come off the protrusions of the end cam 16 ”. The springs 20 press the closing coupling half 6, disengaging it from the coupling halves 4 and 5. The rotation from the worm wheel 9 is also transmitted through the gears 8 and 15 to the carrier 12, which, after uncoupling the coupling halves 4 and 5, begins to turn the cross 11 of the Maltese mechanism with one of the rollers 13 "When the faceplate reaches the preset position, a command is issued to stop the shaft rotation drive" At this point, both rollers 13 cover the protrusion 14 of the cross 11 , holding it, and therefore the shaft with the faceplate from spontaneous rotation under the action of centrifugal forces of rotating masses. In this position, the end cam 16, air-. acting with its protrusions on the clamping rollers 18, it moves the ring 17 and the closing coupling half 6 in the direction of the faceplate, the latter engages with the coupling halves 4 and 5 with the force developed by the disk spring package 19. The faceplate is fixed and the turret is ready for operation.

Claims (1)

Claim A turret containing a housing, a shaft with a faceplate mounted on it, mounted in the housing with the possibility of rotation and fixed from axial movement, placed concentrically relative to the shaft with the possibility of relative rotation of the end cam, kinematically connected with the shaft rotation drive, end gear half couplings, one of which mounted on the housing, and the other is located concentrically to it and rigidly connected to the shaft mounted in the housing with the possibility of axial movement and fixed against rotation an end gear half coupling designed to engage with the mentioned half couplings, clamping rollers designed to transfer force from the elastic element to the closing half coupling when interacting with the end cam 5, the cross of the Maltese mechanism mounted on the shaft and mounted in the housing with the possibility of rotation drove this mechanism with a roller, kinematically connected with the shaft rotation drive, which is connected with the fact that in order to increase the reliability of the head operation, it is equipped with an additional water-mounted of the Maltese mechanism with a roller and both rollers are located symmetrically with respect to the axis of rotation of the carrier with the possibility of covering on both sides of the protrusions on the cross of the Maltese mechanism, while the end cam is mounted on a sleeve introduced into the head with a cylindrical gear ring mounted on the shaft with the possibility of rotation and fixed from the axial movement, and the clamping rollers are installed in the ring introduced into the head, mounted in the housing fixed from rotation and with the possibility of axial movement, wherein the elastic element t is installed between the aforementioned ring and the closing half-coupling, and the carrier is kinematically connected with 15 cogs, the crown of the sleeve.