CS243388B1 - Clamping devices of cylindrical dies, in particular on vertical forging presses - Google Patents

Abstract

The clamping device consists of two segments with a tooth for insertion into the circumferential clamping groove of the die, provided with a centering insert on the dividing surface of one of the segments and a recess on the other segment for mutual stabilization of the position of the segments. The segments are provided with grooves on their upper surfaces for rigid connection with a lock with grooves and are fixed with anchor bolts to the clamping body of the dies.

Description

(54) Cylindrical die clamping devices, especially on vertical forging presses

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The clamping device consists of two toothed segments for insertion into a circumferential die groove provided with a centering insert on one of the segments and a recess at the other segment to stabilize the position of the segments relative to each other. The segments are provided with a groove on their upper surface for rigidly interlocking with a groove and fixed by anchor bolts to the die clamping body.

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to the construction of a clamping device for cylindrical dies, in particular on vertical forging presses.

The prior art used for clamping cylindrical dies into conventional clamps, especially on vertical forging presses, is used monolithic clamping segments, or clamping is said by means of reducing blocks.

A different clamping system is used for the graduated cylindrical dies by means of a special filler including the clamping system.

The production of cylindrical dies for clamping by means of monolithic clamping segments in conventional fixtures increases the size of the starting material for their production and the extent of chip machining of the external shape or increases the cost of production and maintenance of the necessary reduction blocks.

These disadvantages are overcome by the split cylindrical die clamping device according to the invention, which consists of two segments adapted to be inserted into the circumferential clamping groove of the die provided with a centering insert on the dividing surface of one of the segments and with the other recess to stabilize each other.

Both of these segments are provided on their upper face with grooves for mutually rigid fuse connections also with grooves and subsequently fixed by anchor bolts to the die clamping body.

The use of the cylindrical die clamping device according to the invention represents, in particular for vertical forging presses, in conventional die holders, an effect which results in a reduction in the consumption of die-alloyed steels and partly also in the extent of machining of the external die shape.

From the point of view of operational safety of clamped dies, this design solution is fully-fledged and operationally reliable.

1 is a partial cross-sectional view of the apparatus taken along line A-A in FIG. 2, and FIG. 3 is a cross-sectional view taken along line B-B in FIG. 2;

The cylindrical die clamping device consists of two segments I.2 with a tooth J, which bear into the circumferential groove of the die, whereby on their dividing surface 5 by means of the centering insert 5 in the segment 8 and the recess 6 in the segment 2 fuse 6 and tightening with the anchor bolts 2 is a functional connection.

The toothed segments 8, 8 are provided with a groove 8 on their upper surface or only a portion thereof and this is likewise performed on the contact surface of the fuse 8, thereby stabilizing the clamping position and eliminating any lateral forces acting on the anchor bolts.

Claims (1)

SUBJECT OF THE INVENTION Cylindrical die clamping devices, in particular on vertical forging presses, characterized in that it consists of two segments (1, 2) with a tooth (3) for insertion into the circumferential clamping groove of the die provided on the dividing surface (4) of one of the segments (1, 2). ) by means of a centering insert (5) and for the other of the segments (1, 2) by recess (6) to stabilize the position of the segments (1, 2) with respect to each other, these being provided with grooves (7) and fastened by anchor bolts (9) to the die clamping body (10).