DE7312686U - Hammer mill - Google Patents

Description

Hammer mill
I The invention relates to a hammer mill for

Forging of any cross-sectional shape, preferably of
jStangmagerial, which is deformed between the striking and pressing surfaces. The material of the forged part flows off in the direction of the lowest flow resistance, so that, for example in stretch forging, the forging is elongated by juxtaposed upsets.

For forming complex parts from bar stock
Forging rolls commonly used for large numbers of pieces, whose roll pairs with periodic caliber only one revolution each
make. The calibres extend at most over half the roller circumference and are designed according to a certain workpiece shape.

In open die forging, the metal is compressed through targeted compression with simple tools that do not contain the shape of the workpiece

731268615.11.73

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testify given the desired shape. Well-known forging machines work with four tools, each tool being driven by its own eccentric shaft with a connecting rod. The eccentric shafts are rotated synchronously by means of gears. For adjusting the stroke positions of the tools the Exzentarwellen with separate facilities terden set in position. These machines are complex and subject to high wear.

The invention is based on the task of a hammer mill for to simplify the free forging of any cross-section with a large penetration depth and to design it more cheaply in such a way that it is possible considerable space saving is realized under easier conditions of the »job. Their essence becomes especially darii seen that the Vakstückachse from a perpendicular plane of symmetry between two inclined at right angles to each other and driven by a common drive shaft Hammering is cut against one or more forging pads of the anvil sheet serving as a work surface by means of Carriages are linearly guided.

The subject of the invention is shown in the drawing by means of an exemplary embodiment shown schematically, namely shows

. Fig. 1 is a partially sectioned front view of a hammer mill according to the invention;

.2 and 3 slide hammers of the machine according to Figure 1 in perspective views.

A hammer mill of the type presented here consists of the one on dei Drawing illustrated embodiment of two double-armed Levers 1 and 2, which back and forth about their pivot axes 3

• ■ "ι · ■,,

Sheet 3

are driven in rotation. The pivot axes 3 of the double-armed Levers 1 and 2 are rotatably mounted on eccentrics 7 and by worm gear 8 for setting the tool positions arranged transversely to the workpiece and axis 9 adjustable.

It is within the meaning of the invention that the workpiece axis 9 is inclined by a vertical synchromesh A-A between two hammers Io arranged at right angles to one another and driven by a common] drive shaft 4 is cut which guided linearly by means of slide 11 against one or more forging pads 17 of the anvil track serving as a work surface are.

The carriage 11 of the hammers Io running in straight guides 14 have rotatable roller bodies 13, in which the ends 12 of the hammers Io moving perpendicular to their axis of rotation and double-armed levers 1 and 2, which are pivotably driven by a common eccentric shaft 4, are arranged displaceably In this way, a proper movement compensation arises between the circular path of the lever ends 12 and the straight path 14 of the Hammer sledge 11

It has been found to be advantageous to adjust the adjustment devices 3, 8 for the hammer blows on the stationary bearings the double-armed levers 1 and 2 to be arranged independently adjustable. For this purpose, an adjusting shaft 2o is provided for each dividing device 3.8 of a double-armed lever 1 or 2, which is independent of the other shaft 2o the other double-armed lever associated adjusting device is arranged adjustable and adjustable. This will

TOIOCQC.

Sheet 4

It is sufficient that irregular penetration depths of the sled haemiaer 11 striking against the anvils 17 into those involved in the impact Workpiece dimensions are adjustable.

It is also within the meaning of the invention that the eccentrics 21 are arranged on the drive shaft 4 for the double-armed levers 1 and 2 in the direction of rotation against one another and can be locked. For this purpose, the driving eccentric shaft M can be designed in two parts and equipped with an eccentric 21 on each shaft part, the double-armed drive lever 1 bsw. 2 is arranged. This achieves that, depending on the position of the eccentrics 21 relative to one another, the slide hammers 11 strike against their anvils 17 either simultaneously or one after the other, which results in various deformations of the workpiece masses.

It is part of the subject matter of the invention that, as shown in Figures 2 and 3, the forged part of the hammer mill consists of two or more Sets of striking surfaces 19 or 10 a on the hammers Io and There is pressing surfaces 22 and 22a on the anvils 17, which are arranged one behind the other in the direction of the hinge axis 9. The sets of striking faces 19 and 19 'on the hammers Io and Pressing surfaces 22 baw. 22a on the anvils 17 are in accordance with the cross-sectional shape of the forging in the direction of Forging axis 9 arranged at a distance from each other. It is also possible to use the Sätaevoh striking surfaces 19 or 19a on the hammers Io and pressing surfaces 22 and 22a on the anvils 17 are to be arranged offset from one another in the direction of rotation relative to the Sohmiedo axis 9.

Claims (7)

1 · · ■ ι ι ι, sheet 5 claims for protection 1. Hammer mill for forging any Cross-sectional shapes, preferably of bar material that is deformed between striking and pressing surfaces, characterized in that the workpiece axis (9) from a perpendicular plane of symmetry (A-A) between two hammers (Io) inclined at right angles to each other and driven by a common drive shaft (4) is cut, which are guided linearly against one or more forging pads (17) of the anvil track serving as a work surface by means of a slide (11). 2. Hammer mill according to claim 1, characterized in that the carriage (11) running in straight guides (14) of the hammer (lo) have rotatable roller bodies (13) in which the ends (12) are perpendicular to their axis of rotation the double-armed lever which moves the hammer (lo) and is pivotably driven by a common eccentric shaft (4,2o) (1 and 2) are arranged to be axially displaceable. 3 »Hammer mill according to claim 1 or 2, characterized in that the adjusting devices (3,8,2o) on the stationary bearings (7) of the double-armed levers (1 or 2) are arranged independently adjustable. 4. Hammer mill according to one of the preceding Claims 1 to 3, characterized in that the eccentrics (21p on the drive shaft (4) for the swivel levers (1 or 2) in the direction of rotation against one another and can be locked are. 731288618.ii.73 II, Sheet 6 5. Hammer mill according to one of the preceding Claims 1 to 4-, characterized in that the forged part of the hammer mechanism consists of two or more sets of striking surfaces (19 or 19a) on the hammers (10) and pressing surfaces (22 or 22a) on the anvils (17), which point in the direction of the workpiece axis (9) are arranged one behind the other. 6. hammer mill according to one of the preceding claims 1 to 5, characterized in that the sets of Striking surfaces (19 or 19a) on the hammers (10) and pressing surfaces (22 or 22a) on the anvils (17) corresponding to the respectively required cross-sectional shape of the forging at a distance from one another are arranged. 7. hammer mill according to one of the preceding claims 1 to 6, characterized in that the sets of Striking surfaces (19 or 19a) on the hammers (10) and Bsßflachen (22 or 22a) on the anvils (17) according to the respectively required cross-sectional shape of the forging in the direction of rotation the workpiece axis (9) are arranged offset to one another. The patent attorney Dipl.-Ing. AEBERT SCHÜRHOPP 731268615.11.73