SU1219310A1 - Follow-rest - Google Patents

Description

The invention relates to a machine tool industry, in particular, to devices for supporting lengthy parts in metalworking.

The purpose of the invention is to improve the accuracy of centering by increasing the rigidity of the structure.

The drawing shows the kinematic scheme of the steady.

Roller lunette. Contains base 1, on which stands are installed, made of composite from the bottom 2 and top 3 parts. The struts are interconnected by a centering mechanism, made in the form of a screw gear 4, connected to the actuator 5 by means of a maximum torque clutch 6. bottom of 2 racks. The latter are made with a movable stop 10 for limiting the movement of the upper parts of the 3 posts. Slides 11 are mounted on racks, on which centering elements made in the form of rollers 12 and 13 are mounted for movement, with rollers 12 mounted on the lower part of two racks, and rollers 13 on the upper part 3.

Lunette works as follows

When machining the part 14, the base 1 of the roller steady rest is fixed in the guides of the machine; a gauge (not shown) is installed;

Editor A.Shishkin Order 1195/19

Compiled by A. Gavryuashn

Tehred L.Oleynik Proofreader E.Roshko

Circulation 826 Subscription

BNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow ,. Zh-35, Raushska nab., D.4 / 5

Branch PPP Patent g, Uzhgorod, Proektna St., 4

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S

93

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the upper limit of the tolerance floor of the base size of the part 14, and adjust the roller lune-g to the diameter of the workpiece 14 by caliber. For this, the movement mechanism 7 by means of the actuator 8 retracted the upper parts of the 3 racks, freeing the working area for the installation of the gauge. The latter is installed on the rollers of the lower parts of the 2 racks. The movement mechanism 7 by means of the actuator 8 reduces the upper parts of the uprights until the rollers 13 come into contact with the caliber and fix the position of the rollers 12 and 13 by means of sliders 11 (manually) mounted on the uprights. In this case, the movable stops 10 are rigidly fixed on the lower parts of the 2 columns.

The mechanism 7 moves by means of the actuator 8 to spread the racks, freeing the working area to remove the caliber. Take off the gauge. The adjustment of the roller steady on the diameter of the workpiece to the caliber is completed.

G / stop the workpiece 14 in the centers of the machine on the rollers 12, the shift of the lower parts of the 2 racks centering mechanism. After this, the machine drive is turned on and the machining of the part 14 is started.

Claims (1)

LYUNET, containing a base on which racks are installed with the possibility of horizontal movement using a helical gear, bearing support rollers, characterized in that, in order to improve centering accuracy, the racks are made up of lower and upper parts, the upper parts being mounted with the possibility of translational movement in the lower parts equipped with movable stops 12