SU506473A1 - Billet advance limiter on cutting machines - Google Patents

Description

pas, consisting in the unloading of the drive from the perception of the force arising from the impact of the workpiece in the support.

The use of a locking device allows you to reinforce the spring, not allowing the workpiece to oscillate with respect to the stop and, thereby, use it not only as a necessary element of the command device, but also as a shock absorber.

FIG. 1 shows the proposed limiter, a section along the axis; in fig. 2 is a cross-sectional view along A-A in FIG. one; in fig. 3 is a cross-section along BB in FIG. one.

The work advance limiter consists of a measuring rod 1, at the end of which a lead screw 2 is formed, forming a self-braking pair with a nut 3 fixedly mounted in the housing 4, as well as an emphasis 5 with a movably mounted element

6, spring-loaded springs 7, and a stop pin 8 limited in movement, a screw 9 fixing the support 5 on the measuring rod 1, a limit switch 10 and a flag 11 acting on it fixed to the element 6 of the locking device consisting of a tongue 12 fastened with an earring 13, a spring 14, a guide bracket 15, a rod 16, limiting the course of the earring 13, a workpiece 17.

Works proposed limiter as follows.

After installing the stop 5 to divide the measuring rod 1 by the required size and fix it with a screw 9, the workpiece advance limiter is reset when the spring-loaded element 6 is within the projection of the cross section of the workpiece 17 (see Fig. 3), and tongue 12 the locking device is outside the slot on the spring member 6.

Under the action of the advanced workpiece 17 spring element 6, compressing the spring

7, moves to the stop in the pin 8 (see Fig. 1). As a consequence, the tongue 12 under the action of the spring 14 drops into the groove on the spring-loaded element 6 and fixes it, and the flag 11 releases the limit switch 10, giving the command to continue the machine cycle.

After cutting the workpiece and removing the tool heads, a command is sent to turn on the installation drive and eliminate the stop, which rotates the measuring rod 1 with the screw 2 through the kinematic pair 18 and the sliding key 19.

This rotation spring element 6

moves along a helical path, the output

beyond the cross section of the workpiece and

at the same time moving from its end along the axis.

At the same time, the edge of the groove of the earring 13 rests on

a rod 16 passed through it and a pulling tongue 12 from a groove on a spring-loaded element 6, which is pushed forward by the action of springs 7. In this case, the flag 11 presses the limit switch 10, giving the command for reversing the drive to move the stop. As a result of the reverse, the movement limiter of the workpiece returns to its original position.

Claims (2)

1. A workpiece advance limiter on cutting machines, including a stop movable in the plane of the end of the workpiece, driven by its movement, equipped with a spring-loaded element in contact with the end of the workpiece, characterized in that, in order to eliminate the friction of the stop along the end of the workpiece, the limiter is equipped with a locking device holding spring loaded the element and the running self-locking screw pair, the screw of which is located perpendicular to the end of the workpiece, is rigidly connected to the shaft and is kinematically connected with the drive of its movement, and the nut is fixed still in the case of the limiter. 2. A limiter according to claim 1, characterized in that the locking device is in the form of a spring-loaded tongue interacting with the spring-loaded element by means of an earring mounted on the limiting rod. AND 1 l 13 yu 19 - / FIG.