Cutting – Means to drive or to guide tool – Constantly urged tool or tool support
Patent
1995-08-11
1997-10-21
Rada, Rinaldi I.
Cutting
Means to drive or to guide tool
Constantly urged tool or tool support
83627, 83590, 83824, 83635, 83684, 384 42, 3849071, B26D 106, B26D 500
Patent
active
056784686
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The sector which this patent's technique comes under is that of punching tools driven by presses.
Statement of the prior state of the art. There are already certain kinds of punching devices of the type that transfer a vertical movement into a horizontal punching effect; one of the standard types known of is made up of a base which holds the punch and the die, which has a set of two wheels on an axle, the upper wheel being driven by the press and the lower one consequently punching the horizontal body of the punch holder, which can have a gas cylinder for transmission for the horizontal movement.
ES U9103566 discloses a "improved device for driving the striker in punching machine tools" made up of a "U" shaped piece or chassis set horizontally, which includes a vertically moveable striker and a dual effect fluid plunger which determines the stroke of the striking part by means of fluid-dynamic transmission. This is a classic arrangement and the transmission of the movement is made in the same direction as this is received by the striking unit.
ES U237 261 for an "improved punching unit" which is prior to the device already mentioned and has very similar characteristics as regards its structure and operation.
The aim of this invention is to provide a lateral punching unit made up of a set of parts which are designed to transmit a punching movement 90.degree. from the direction in which the pressure or the corresponding press stroke is exerted its main advantage lies in its simplicity, its small size, stemming from the type of alignment involved in the wedge and its anti-rotation system, features which enable errors in the return stroke to be detected and thus prevent the press from making a further stroke on the upper piston, apart from the efficient transmission of the vertical movement into horizontal movement. These parts are furthermore substantially economical to make.
This is made up of a body which constitutes the support for the whole assembly, which has substantially two moving parts: one which moves vertically, and the other which moves in a horizontal direction both connected so that the vertical one grips the horizontal one, preventing any possible turning torque arising in the second one.
BRIEF DESCRIPTION OF THE DRAWINGS
In order to made the following explanation clearer, five sheets of drawings are enclosed, which represent the essence of this invention in ten figures. The first five of these represent one particular embodiment, and the five following ones are of another embodiment made in the same way and with the same essence, for stronger unit.
FIG. 1 shows a longitudinal section of the item ready to start punching.
FIG. 2 shows a longitudinal section of the item just as the piston has been lowered.
FIG. 3 shows a cross section in accordance with FIG. 1.
FIG. 4 shows a cross section view in accordance with FIG. 2.
FIG. 5 shows a top view of the piece.
On possible embodiment is represented in the following figures.
FIG. 6 shows a longitudinal section of the part ready to start punching.
FIG. 7 shows a longitudinal section of the part just as the piston has been lowered.
FIG. 8 shows a cross section view in accordance with FIG. 6.
FIG. 9 shows a cross section view in accordance with FIG. 7.
FIG. 10 shows a lower view of the item, that is, as seen from below.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
In these FIG. 1 indicates the supporting body, 2 the upper wedge, with 3 being the upper piston, 4 the lower wedge, 5 the anchorage plate or front part for clamping the punch, 6 the return spring, and 7 the plate, one of whose characteristics is that of having a low friction coefficient which withstands high pressures, and can be provided with lubricant, for example graphite, 8 being the silencing stop. 9 are the piston scrapers, 10 is the inner cross-piece, 11 the slot in the body of the lower wedge, 12 the anchorage holes for the punch holder, 13 the plate that covers the space or hole which generates the movement of the lower wedge 4, 14 being the hole for the
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For high pressures, low velocities . . . Bonded Coatings Lubricate Metal Parts by Alfred Disapio in Product Engineering on Sep. 5, 1960.
Lozano Bonet Alfredo
Lozano Bonet Jose
Ashley Boyer
Goldberg Richard M.
Rada Rinaldi I.
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