DE1250235B - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B 23 b

German class: 49 a - 35/03

Number: 1 250 235

File number: W 363041 b / 49 a

Filing date: March 2, 1964

Opened on September 14, 1967

The invention relates to a device for limiting the facing movement of a turret head with a horizontal switching axis parallel to the rotating spindle, in which a stop slide is mounted in a recess of a stationary housing in a limited pivoting manner in the vertical plane and acts on the feeler pin of a dial gauge.

In a known device for limiting the plan rotation of a Revolveiiopfes in a transversely movable to the switching axis slide a stop is mounted with limited pivoting around an axis parallel to the indexing axis of the turret axis against the force of a spring, wherein the tilt movement of this stop transmitted via Onea two-armed lever on a dial gauge will. In this known device, the dial gauge can only be used to a very limited extent as a feed scale, since the accuracy of the display is impaired by the arrangement of the transmission lever and the friction that occurs.

The invention is based on the object of improving the accuracy of such a display Avoid unnecessary transmission elements to increase.

According to the invention this is achieved in that the stop slide is pivotable about the upper boundary edges of the recess lying parallel to the indexing axis of the turret head and the feeler pin rests directly on the surface of the stop slide. The stop slide arranged and designed in this way also enables the turning diameter to be set precisely during long turning and can also be used as a fixed stop.

A device for limiting the facing movement of a turret head is already known, in which the feeler pin rests directly on the surface of the stop slide, but in this known device the analysis slide is designed as a bending rod by arranging transverse slots, the deflection of which is transferred to a dial gauge. This known device has the disadvantage that the deflection of the slide does not take place in a certain proportion to the movement of the turret head, so that the dial gauge serves only as a marking scale, but not as a feed scale. As a result, the lathe bit tip must be set up again after each wear.

In the inventive device the distance between the outer Sefiwenkpunkt of the stop slide and the point of application provided on the turret as well as the distance between the AnscMagschraube äoßeren An apparatus stand for limiting
the facing movement of a turret head
with horizontal, to the turning spindle
parallel switching axis

Applicant:

Machine tool factory
Gildemeister & Comp., Akt-Ges.,
Bielefeld, at the main train station

Named as inventor:
Wilfried Demmer, Vilsendorf

slide slide pivot point and the contact point of the dial gauge feeler pin in the same ratio to each other like the distance between the inner pivot point of the stop slide and the point of application the stop screw and the distance between the inner stop slide pivot point and the contact point of the dial gauge feeler pin. This ensures that regardless of the stop direction, either from above or below, the same infeed paths on the tool Dial gauge displays correspond.

The stop slide can be displaced to a limited extent in a quiver having a U-shaped cross section stored. This quiver, which encloses the stop slide free of play on three sides and is in a recess of the dial gauge housing in a vertical plane limited pivotable, but by both sides the housing recess fastened parts is sealed against contamination, enables a The stop slide can be easily moved by hand and ensures a high level of reading accuracy.

Furthermore, a pin is mounted below the housing recess, the head of which is counteracted by a spring the bottom of the quiver is pressed down. This ensures a precise fixation of the stop slide achieved, which is advantageous for the repeatability of the dial gauge readings.

Finally, the spring-loaded pin is at a certain pivoting deflection of the slide the push pin of a limit switch can be actuated, which controls the facing feed via an electrical coupling the machine switches off. In this way, a sensitive switch-off option is possible with extremely simple means achieved.

709 647/311

Claims (6)

An exemplary embodiment of the subject matter of the invention is shown in the drawing. 1 shows a perpendicular section through the limiting device, FIG. 1, running at right angles to the indexing axis of the turret head. 2 a schematic side view of the device in the direction ^ (Fig. 1), F i g. 3 and 4 details of the limiting device in two different stop positions of the slide. The inherently rigid urid serving as a stop for the screw 2 provided on the turret head 1 is in the illustrated embodiment in .einem U-shaped cross-section possessing quiver 4 by means of a pin 6 engaging in a longitudinal groove 5 mounted so as to be longitudinally displaceable to a limited extent. The quiver 4, which encloses the slide 3 without play at three points, can be pivoted to a limited extent in a rectangular recess 7 of a housing 8 arranged on the turret slide, but is sealed against contamination by sealing elements 9 attached to both sides of the recess 7 on the housing 8. Above the stop slide 3, a dial gauge 10, known per se, is fastened on the slide 8, the feeler pin 11 of which rests against the upper side of the slide 3. The quiver 4 with the slide 3 is constantly under the action of a plate spring assembly 12, which is mounted in a recess of the housing 8 and encloses a pin 13, the head 14 of which rests against a centering 4 a provided on the underside of the quiver 4. This pin holds the quiver 4 in the position shown in FIG. 1 and 2 shown rest position. In this position of the quiver 4 and thus also of the slide 3, the dial gauge 10 is in the zero position. The push pin 15 of a limit switch 16 rests against the underside of the pin 13, via which an electric coupling arranged in the facing feed remains switched on as long as the stop slide 3 and the quiver 4 are in the rest position. However, as soon as the screw 2 provided on the turret head 1 strikes the slide 3 from above or below and this pivots with the quiver 4 from the rest position shown in FIG. 1 by a certain amount in the sense shown in FIG. 3 or 4, the pin gives way 13 under tension of the disc springs 12 downwards, and the push pin 15 is axially displaced. This axial displacement of the push pin 15 causes a disconnection of an electric clutch, not shown, and thus a disconnection of the face turning feed. Each pivoting of the stop slide 3 is indicated by the dial gauge 10. Since there is a certain dimensional relationship between the stop point of the adjusting screw 2, the stop point of the dial gauge probe 11 and the pivot points of the stop slide 3 on the housing, the respective penetration depth of the turning tool 17 or the like attached to the turret head 1 can be read off precisely on the correspondingly calibrated dial gauge 10 will. The distance (Fig. 3) between the outer pivot point M of the stop slide 3 and the point of application N. of the set screw 2 provided on the turret head and the distance b between the outer pivot point M of the stop slide 3 and the contact point O of the dial gauge probe 11 are in the same ratio as the Distance a '(Fig. 4) between the inner pivot point P of the stop slide 3 and the point of application Q of the screw 2 and the distance b' between the inner stop slide center of gravity P and the contact point O of the dial gauge probe 11. ".., claims: 1. Device for limiting the facing movement of a .Revolverkopfes with a horizontal switching axis parallel to the rotating spindle, in which in a recess of a stationary housing a stop slide is pivotably mounted in a limited vertical plane, which acts on the feeler pin of a dial gauge, characterized in that the stop slide (3) is pivotable about the upper limiting edges (P and M) lying parallel to the indexing axis of the turret head and the feeler pin (11) of the dial gauge (10) rests on the surface of the stop slide (3). 2. Apparatus according to claim 1, characterized in that the distance (a) between the outer pivot point (M) of the stop ■ slide (5) and the point of application (N) of the stop screw (2) provided on the turret head (1) and the Distance (b) between the outer pivot point (M) of the stop slide (3) and the contact point (O) of the dial gauge probe (11) are in the same ratio to each other as the distance (a ') between the inner pivot point (P) of the stop slide (3 ) and the point of application (Q) of the stop screw (2) and the distance (b ') between the inner stop slide pivot point (P) and the contact point (O) of the dial gauge probe (11). 3. Apparatus according to claim 1, characterized in that the stop slide (3) is mounted in a U-shaped cross-section possessing quiver (4) to a limited extent longitudinally displaceable. 4. Apparatus according to claim 1 to 3, characterized in that the slide (3) on three sides enclosing the quiver (4) in a recess (7) of the housing (8) in a vertical plane limited pivotable, but through both sides of the recess (7) parts (9) fastened in the housing (8) are sealed against contamination. • 5. Device according to Claims 1, 3 and 4, characterized in that a pin (13) is mounted in the housing (8) below the recess (7), the head (14) of which is pressed against the underside of the holder (4) by a spring (12) ) is pressed. 6. Apparatus according to claim 5, characterized in that the pin (13) at a certain swivel deflection of the slide (3) of the push pin (15) of a limit switch (16) can be actuated, which switches off the facing feed via an electrical coupling. Documents considered: German Patent No. 935 040. For this purpose, 1 sheet of drawings 709 647/311 9. 67 © Bundesdruckerei Berlin