SU125997A1 - Adaptation to the lathe for automatic dividing by the turn when cutting multiple threads - Google Patents

Description

In the known adaptations to a lathe, for automatic dividing by thunder when cutting multiple threads, comparatively complex means with hydraulic drive and differential are used, which are included in the kinematic chain of the machine between the spindle and the lead screw for the dividing time by the thunder and the last additional speed is reported required to move the tool to the next thread start.

In the described device, automatic dividing into a setting for cutting multiple threads is carried out by simple mechanical means. The device is made in the form of a clutch, the leading element of which is connected to the body, carrying a rocker arm with two legs, which serve to alternately act on a removable pitch disc mounted on the clutch driven element, kinematically connected to the machine guitar.

FIG. 1 shows the device, view from one of its side; in fig. 2 - the same, view from the other side of its side; in fig. 3 - the same view with a partial cut in the axial plane.

The device is a detachable sleeve mounted on the roller of the first driving guitar of the guitar in such a way that the driving disk / (element) of the coupling having a splined roller at the end is put on the first driving guitar of the guitar and the driving disk 2 (element) of the coupling on the roller .

Between the driven disk / and the driving disk 2 there is a coupling housing 3, the rotation to which from the driving disk 2 is transmitted through the key 4. The housing 3 carries the rocker arm 5 with the tabs 6, one end of which is connected to the driving disk 2. At the other end of the rocker arm 5 there is a strap S extending beyond the plane of the end of the foot and held in this position by the spring 9.

NO 125997

On the driven disk /, on the periphery of which evenly spaced grooves are cut, a removable separating disk 10 is put on, having a number of grooves corresponding to the number of the thread. The grooves of the dividing disk 10 coincide with the grooves of the slave disk 1.

Rotation from the driving disc 2 to the driven disc / is transmitted through the legs 6 of the rocker arm that are inserted into the grooves of the driven disc / alternately. During the working stroke, the rotation of the driven disc is transmitted by a foot with the strip 8, and during idling by the other foot and spring thrust 7. When reversing the rotation, the housing 5 is braked by the friction created between the housing and the driven disc 1, and the driving disk 2 rotates a certain angle with respect to the housing 3 up to the stop of the tongue 4 into the wall of the slot groove in the housing, and the spring ha 7 rotates the lever-rocker, withdrawing the tab with the strip 8 from engagement with the driven disc / and inserting the other tab into engagement with this disc. When switching again to the working stroke, this other foot is out of engagement with the driven disc, and the foot with the strap 8 slides on the outer surface of the removable dividing dividing disk JO until the end of the plaque 8 and the legs coincide as a result of the impact on the spring bar 9. Thus the foot together with the bar enters the groove formed by the groove of the replaceable dividing disc and the groove of the driven disc /, and division into the next run of the cutter takes place. The division into an overhaul is performed automatically without stopping the lathe.

Subject invention

Adaptation to a lathe for automatic dividing by turning when cutting multiple threads, characterized in that, in order to carry out the division during the operation of the machine, IT is made in the form of a coupling, the leading element of which is connected to the body, Bearing a rocker arm with two legs intended for a local impact on a replaceable pitch disc, sitting on the clutch follower element, kinematically connected with the machine guitar.