SU1191189A1 - Tail stock of lathe - Google Patents

Description

The invention relates to machine tools, in particular to turning machines, and can be used for simultaneous machining of the outer surface and 5 drilling holes in the flange of a tubular billet.

The purpose of the invention is the expansion of technological capabilities by ensuring the drilling of holes in the south flange of a tubular billet simultaneously with the machining of its outer surface.

Figure 1 shows the tailstock, a longitudinal section; figure 2 - 15

section aa in figure 1.

The tailstock includes a housing 1 in which the cup 2 is mounted for rotation on the thrust 20 bearings 3. In the cup 2 there is a quill 4 arranged for movement along an axis. The pusher 5 mounted in the quill hole is rigidly connected to the rod 6 of the pneumo-25 cylinder 7 fixed to the quill 4. The conical end of the pusher 5 is in contact with the self-centering cams 8 centering the workpiece 9. On the cup 2 a multi-spindle head 10, sun gear is installed 11 which is rigidly fixed to the housing 1 and is in engagement with the gears of 12 spindles 13. A pinch plate 14 is installed on the quill spuds 4, which is pressed out from the head hull 10 by a spring 15. The quill extension 4 is limited by the stop 16. The chassis 1, mounted on rails 17, is connected to feed mechanism 18.

eight

The tailstock works as follows.

Using the feed mechanism 18, the body 1 of the headstock is guided along the guides 17 (accelerated supply) and the quill 4 is inserted into the workpiece 9 up to the stop of the conductor plate at the end of the workpiece, compressed air is fed into the rodless cavity of the cylinder 7, the rod 6 of which moves the pusher 5, cams 8 under the action of the conical end of the pusher 5, advancing, centers and clamps the workpiece 9. When the rotation drive is turned on, along with the workpiece 9 rotates the quill 4 with the cup 2 and the conductor plate 14 fixed on them; multi-spindle head 10. Gears 12, rolling around on the sun gear 11, cause the spindles 13 to rotate. With the help of the feed mechanism 18, the casing 1 is fed (working stroke) together with the multi-spindle head 10. At the same time, the spring 15 is compressed, holes are drilled. Simultaneously with the drilling process, the outer surface of the workpiece 9 can be machined. After the fur has been machined, the feed box 18 is removed from the body 1 of the headstock together with the multi-spindle head 10, and the drills are removed from the workpiece 9. Air is released into the rod end of the cylinder 7 by unlocking the cams 8, then the feed head 18 is discharged by the feed mechanism 18. While the quill 4 is derived from the workpiece 9 and under the action of the spring 15 occupies the leftmost position relative to the housing 1, which is determined by the position of the stop 16,

Claims (2)

REAR LATCH OF A LATHE MACHINE containing a body mounted on rails, a cup mounted for rotation in a body, placed in a pinhole glass with self-centering cams with elements of their unclamping, a pneumatic cylinder and a pusher connected to a cylinder rod, characterized in that, in order to expand technological capabilities, the headstock is fitted with a spindle head mounted on the glass with the possibility of joint rotation, the spindle drive gears are kinematically connected with the sun gear inserted into the grandmother fixed on the body, spring-loaded conductor plate mounted on the quillies, feed mechanism, kinematically connected with the body of the grandmother. 6811611 "’ P5 > FIG. one 1191189 2