SU1230747A1 - Apparatus for working parts in metal-working machine tools - Google Patents

Description

The invention relates to metalworking devices, in particular to auxiliary devices for lathes, and can be used mainly on vertical multi-spindle semi-automatic lathes when bore body products with a cutter rebound from the machined surface at the end of the stroke.

The aim of the invention is to improve the reliability of the device.

The goal is achieved by performing a shock-spring mechanism in the form of two plungers arranged coaxially in one another and mutually spring-loaded, the inner plunger having the ability to interact with an unequal arm, and a groove in which the end of the lever-lock is inserted in the outer plunger.

FIG. Figure 1 shows schematically the device at the time of the end of processing, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 is a view of B in FIG. one; in fig. 5 is a section of YYD in FIG. 1 (before the end of the process); in fig. 6 - the same, in the initial position.

The device consists of a plunger 1 placed movably in the axial direction in the opening 2 of the housing 3 fixed rigidly on the support 4 of the machine. In this case, the plunger 1 is fixed against rotation by means of a locking screw 5 screwed into the housing 3 and contacting its free end 6 with the walls of the longitudinal through window 7 made in the housing of the plunger 1. The lower end of the plunger 1 is provided with a roller 8. Moreover, the plunger 1 is spring-loaded 9, located in the slots of the longitudinal through window 10 and abutting at the top of the base 11 of the finger 12, mate fixedly (by means of a threaded joint) with the upper end of the plunger 13. In turn, the plunger 13 is movably movable It is mounted in plunger 1 and is spring-loaded from above relative to housing 3 by means of spring 14. The lower end of plunger 13 is provided with roller 15. In addition, the finger 12 of plunger 13 is articulated movably with the free end 16 of the larger arm 17 of the unequal lever 18.

The shock-spring mechanism (plunger mechanism) of the device also contains a lever-latch 19 fixed pivotally on the housing 3. The upper end 20 of the lever-clamp is spring-loaded 21, and its lower end 22 is bent toward the plungers and freely placed in the window 23 of the housing 3 and the window 7 of the plunger 1. The middle part of the lever-clamp 19 is provided with a clamp 24 for fixing the free end 16 of the shoulder 17 of the unequal lever 18.

Cutter 25 is fixed on the support 4, which processes the workpiece 26. End 27

an unequal arm 18 is mounted on an axis 28. The toolholder is provided with rings 29 and 30 and is provided with a spring 31 associated with a cone.

Lever-lock 19 is installed on the device by means of a hinge 32.

The device works as follows.

The machine support 4 with the device fixed on it with the cutter 25, moving along the surface of the rotating workpiece 26, interacts with the device roller 8 with the end of this workpiece (Fig. 6). As this movement progresses, the plunger 1 moves upwardly relative to the housing 3, compressing the spring 9. At a certain moment, the roller 8 of this plunger begins to contact the roller 15 of the plunger 13 and, overcoming the force of the spring 14, raises the plunger 13 up. In doing so, the finger 12 of the plunger 13 lifts up the free end 16 of the shoulder 17 of the unequal arm 18, and the end 27 of this lever, which turns on the axis 28, goes down. The free end 16 of the lever 18 rises above the retainer 24 of the lever 19 and is fixed in this position.

At the time of the end of the treatment, i.e. at the time of lowering the cutter 25 to the lowest position, or after the cutter leaves the machining zone in the process groove, the end 27 of the lever 18 acts on the toolholder finger and thus pushes the tool holder out of the taper hole of the housing 3 and hangs on the shoulder of the lever 18 with a finger. By means of the force of the spring 31, the tool holder with the tool 25 is retracted from the work surface. After that, the device is retracted upwards. In this case, as the device disengages upward of the spring 9, expanding, the plunger 1 is directed to the lower (initial) position, and the plunger 13 remains stationary (Fig. 6). After the cutter 25 is brought out of contact with the workpiece 26 and at the same time the roller 8 of the plunger 1, the latter lowers to its extreme position and with its upper end of the longitudinal through window 7 comes into contact with the lower end 22 of the locking lever 19. The latter moves away from the plunger 1, turning on the axle, breaking the force of the spring 21, and releasing the end 16 of the lever 18 from the clamp 24. The spring 14 opens and sharply sends the plunger 13 to the lower initial position. At the same time, the lever 18 rotates on the axis 28. The shoulder 17 of this lever, carried by the finger 12, turns downward, and the end 27, turning up, sharply lifts the tool holder on the finger, and thus the tool holder is firmly wedged in the conical hole of the housing, t. e. the device is reset.

The invention allows to increase the reliability of the device.

FIG. 2

vb

0 77/77/77 L

Fig.Z

In id

FIG L

Yr

FIG.

gd

/ "

26

FIG. 6

Compiled by A. Kornilov Tehred I. Vererescorrector L. Patay

Circulation 1001 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

DEVICE FOR PROCESSING PARTS ON METAL-CUTTING MACHINES, including a housing located on a support on which a tool holder with a cutter is mounted and a mechanism for removing the cutter from the work surface connected with it by means of an unequal lever, having the ability to interact with the end face of the workpiece by means of a roller, characterized in that in order to increase the reliability of the device by increasing the reliability of jamming of the tool holder, the mechanism of removal of the cutter is made in the form of two plungers, located coaxially one in the other and mutually spring-loaded, the inner plunger equipped with a stop in the upper part, which can interact with the large arm of the unequal arm, and in the lower part, with a roller that can periodically interact with the outer plunger roller, which is equipped with a groove and is located in the groove the end of the locking lever inserted into the device, pivotally mounted on the housing, spring-loaded relative to it and having the ability to interact with a large unequal lever _{with the} shoulder. S OS