SU1237294A1 - Automatic machine for hot die forging - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to automatic hot stamping machines.

The aim of the invention is to improve the performance and reliability of the machine.

FIG. Figure 1 shows the kinematic diagram of the automaton; in fig. 2 - the drive mechanism of pieces of the workpiece with a clamping finger in the isometry.

The hot die forging machine includes a slider 1 with punches 2, a block of 3 dies with a cutting half matrix 4, a bar feeding mechanism 5, a housing 6 of a node for pressing a rod with clamping half matrix 7 and adjustable stops 8, a mechanism for cutting blanks with a slider 9 and the cutting knife 10, the mechanism 11 for transferring the workpiece to the memory unit with the clamping finger 12, the roller 13 and the spring 14, the shaft 15 with the crank 16, the drive of the cut mechanism including the rotary lever 17, the thrust element 18, the springs 19 and the intermediate links 20, 21 and 22.

The shaft 15 is also driven by a bar clamping unit and a clamping finger of the transfer mechanism of the cut piece.

The proposed machine works as follows.

The feed mechanism 5, the bar 23, is fed into the machine between the cut-off 4 and the presser 7 semi-matrix, the cutting knife 10 and the clamping finger 12.

At the moment of filing the bar, the slider 9 of the cut-off mechanism by means of the adjustable stop 8 of the bar-clamping unit is installed so that the cut-off knife 10 is located coaxially with the clamping half-matrix 7. At this, the clamping finger 12 is retracted from the bar 23 by means of a spring 14

The feed tub bar 23 is pressed by the semi-matrix 7 to the cutting semi-matrix 4, and thus the cutting knife 10 is led to the rod. Then, using the roller 13 of the transfer mechanism 11, the clamping finger 12 is pressed against the bar 23, thereby securing the bar between the cutting knife 10 and the finger 12. At the moment of pressing the bar 23 with the semi-matrix 7 to the half-matrix 4, as well as with its pinching with the finger 12, resistant element 18 is located with a gap in relation to the slider 9 of the segment mechanism.

When the clamp is located on the pivot arm 17, the thrust element 18, moving, is in contact with the slider 9, produces a piece of the workpiece and transfers it to the stamping position, where with the aid of the punch 2 located on the slider 1, the workpiece is pushed into the block of matrices and the subsequent stamping. When pushing the workpiece, the clamping finger 12 is retracted by means of a spring 14 and a roller 13. Then, the cutting knife 10 is retracted to the bar feed position. The retraction is carried out by driving the cut-off mechanism with the help of springs 19 until the slider 9 of the cut-off mechanism reaches the adjustable stop 8.

Pe1) the clamping half-lip 3 and the drive elements of the clamping finger 12 are placed from the cam-wheels located on the shaft 15.

The design of the machine allows clamping the cut bar and clamping the finger to it with less stringent requirements for synchronizing the operation of their drives with drives of other assemblies and mechanisms, which allows the machine to increase productivity by reducing the time for commissioning and also increase its reliability work.

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Editor N. Shvydka

Compiled by A. Patrin

Tehred V. Kadar Proofreader E. Sirohman

Order 3226/10 Circulation 655Subscription

VNIIPI USSR State Committee

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

Production and printing company, Uzhgorod, st. Design, And

Claims (2)

. 1. AUTOMATIC MACHINE FOR HOT VOLUME STAMPING, comprising a slider mounted on a bed with a set of punches, a matrix block with a cutting half-matrix, a clamping unit for a bar with a pressing semi-matrix installed in a housing that is movable in a direction perpendicular to the direction of supply of the bar, a cut-off mechanism from the workpiece with a knife mounted on the crawler, the mechanism for transferring the workpiece to the matrix block with a clamping finger, the common drive of the said nodes and mechanisms with shafts interconnected by gears, while the crawler, n Carrying a detachable knife, kinematically connected using a two-shouldered pivot arm and intermediate links with a drive shaft, characterized in that, in order to increase productivity and reliability, its operation, the case with the clamping semi-matrix is equipped with a stop installed with the possibility of interaction with the crawler carrying the detachable a knife, which is kinematically connected by means of a spring and thrust elements to the arm of the pivot arm not connected to the intermediate links, and the thrust element is installed with a gap relative to polzushki. 2. The machine according to claim 1, characterized. the fact that the emphasis of the housing with the clamping semi-matrix and the thrust element are made adjustable.