DE1777452A1 - DIVIDED CUTTING PLATE - Google Patents

Description

DR. BERG DIPL.-ING. SiAPF DIPL.-ING. SCHWABE DR. DR. SANDMAIR

PATENT LAWYERS

8 MUNICH 86, POST BOX 86 02 45

P 17 77 4-52.6-14-29.3ep. 1975

Attorney file 26 555 ^{I /// HJA}

Company Walser, Zurich / Switzerland

Split cutting board

The invention "relates to a split cutting plate for stamping work, made of cheeks that are directly connected to one another, the front side to the long side.

Cutting plates are frame-like tool parts that are included in them retractable cutting punches for cutting and / or reshaping flat material such as sheet metal, flat profiles, insulating plates, Sheets, paper and the like can be used. Depending on the

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(089) 988272 8 Munich 80, Mauerirchentrfe 45! Unken: B.yeri «n ^{e V} ^« ^b ^ ^{Munich 45310} °

987043 Telegnunme: BERGSTAPFPATENT Munich ^^^

983310 TELEX: 0524560 BERG d Posucheck

The number of pieces of punching parts, the working pressures, the material to be processed, the press used and the like. These tool parts also include guide plates or column guides, ejectors, fastening parts and dglο The invention is concerned exclusively with one divided, assembled from individual dividing and / or forming cheeks Embodiment of a cutting plate.

As a result of the relative movement between the cutting plate and the cutting punch, the flat material placed in between is processed in a delimited area, that is to say separated and / or reshaped. The work done on the flat material is applied by the edges and abutting surfaces of the parts of the tools that penetrate one another. These edges and surfaces, in particular on the cutting plate and its cheeks, are referred to below as processing edges and processing surfaces, and the tree delimited by them all as processing space. The shape or configuration of this processing space corresponds to the produced stamping · the elements of the configuration are even the shape, in particular the outline of the processing space, the size d · h · the dimensions of the ground plan and height, and also the type of machining edges, for example the sharp separating edges or round IM-shaped edges

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Punching work is generally understood to mean processing by cutting, piercing, punching, bending, rolling, stamping, folding, pulling through and the like. These types of production designated as forming "take in mass production an ever increasing space one. Their products are characterized by uniformity, dimensional stability, intact surface, low cost and the like. Λ from.

For large quantities and not too large objects are the cutting boards are mainly made from one piece. For their production, hard materials must be used on the inner surfaces machined to tight tolerances, the purchase price is therefore high and unacceptable for small series. Extensive Objects, like body pieces, are also divided by means of Cut plates produced In known designs of this type, individual parts are on a base plate or in attached to a frame and joined to form a cut shape

One would like to take advantage of the punched articles also for small series, but as described the high expenditure for the cutting plate is an obstacle in the way. For a lot of work in fixture and test sample construction, for manual

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technical needs, handicrafts or the production of models, for the procurement of assembly and installation accessories, In industry and workshop, the use of a cutting tool could make work easier and faster, sox-iie improve the product.

A tool that could be used for several different jobs and yet would not be significantly more expensive could do this Meet need. Very often the same or similar work is carried out in different sized processing rooms to execute. It can be, for example, rectangular openings, bulges or openings that differ only in their length or width, or which only require different types of machining edges of the same length for their production. Work for triangular Separating flaps, hexagonal flat nuts, for bushings, honing holes on plates, chassis, covers, Fastening pieces, individual part or device housings often have elements of the same type in a similar way, so that an adaptable cutting plate can be used several times together with the appropriate cutting punch and thus the production would be less expensive.

Where clean cuts on flat surfaces are necessary, there is no way of doing without a profiled cutting plate. For such

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Cases and also for pressing work, it is known to cut plates made of deep-melting alloys of sufficient strength to pour on the stamp and, if necessary, to seal it with a plate that has been punched out for the first time and then hardened add to.

Ss is also known to have split cut panels with immediate to produce cheeks connected to one another or by means of a base plate, the cheeks having elongated holes and the size of the machining area can be changed.

In contrast, the invention creates a split cutting plate that does not require a special base plate and has better adjustment options. ^

This is done according to the invention with a split cutting plate

of the above type erxiähnten achieved in that the encryption etc.

binding between at least two front sides on the long side butting cheeks can be adjusted by adjusting along the long side and adjusting the connection is secured by adjustable stops on the long side abutting the associated cheek, which attack directly on the assigned cheek.

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Refinements of the invention are the subject of the subclaims . ·

• The invention is based on the drawing to some Embodiments explained. In the drawing shows:

Fig. 1 is a cut plate made of two cheeks and

to 4 a cutting plate made of four cheeks.

The cheeks of the cutting plate according to FIGS. 2 to 4 consist, as can be seen from Fig. 3 or 4-, of a square rod, the opposite longitudinal sides of which are normally parallel, so that the cross-sectional area of the rod is a parallelogram. In the case of the cutting plate according to FIGS. 2 to 4-, the inner longitudinal side of one cheek is always placed on the W face of the next cheek. The mutual contact points of the cheeks, ie their connecting surfaces, consist according to FIG. 3 or 4 of planar surfaces or surface parts lying in one plane. So that the vertical processing pressure is distributed to the punching surface of all the cheeks of a cutting plate with the greatest possible protection of the connection points, the connection surfaces must match each other in such a way that the transfer points of this pressure on the punched sides of all cheeks lie in one plane. On the by-

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transferring play can be said that the vertical angle of the juxtaposed connecting surfaces to 180 ° must or that to a vertical angle of 90 of the inner Long side of one cheek a vertical angle of. also 90 ° of the face of the adjacent cheek belong nut.

So that the cheeks can be connected directly to one another and at least partially changeable, they have holes which penetrate through the vertical sides and / or pierce them. S ¹ Neither a base plate nor a frame, or spacers, holders and the like are required to assemble a split cutting plate. In the embodiment according to FIGS. 2 to 4, the cheeks are screwed and have screw holes in the long sides and front sides. The cheeks have an elongated hole at 90 to the long side, the length of which corresponds to the desired adjustment range of the machining area. By means of a screw S per cheek, the cheeks can be assembled to form the divided cutting plate. When the screws are loosened, the adjustment to larger or smaller dimensions of the machining area is possible by shifting the screws in the elongated holes

The firmly screwed cutting plates retain the set iomeasurements even with high machining pressures,

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which naturally seek to drive the cheeks apart. By means of a lever and wedge effect between the screw head, which cannot be moved due to the high surface pressure, and the contact surface of the two cheeks results in an increasing pressure when there is a tendency to give way, which prevents displacement. Avoiding the will be absolutely impossible Cheeks, if a support on the free end face is present approximately in IPorin the clamping screw Ps (Fig. 2 to 4-).

The longitudinal edges of the cheeks are at least partially designed as machining edges. In FIGS _o 3 and 4, the edges are, for example, 27 »29» 31 and 33 formed as a sharp Srenn- or cutting edges, and the edges 28, 3 ° »34- 32 and as round or Uniform- Bigge edge. By appropriate combination, three different types of cutting plates can be produced, namely a die-cutting insert, a piercing insert and a die-cutting insert. The cut-out plates cut a closed figure from the flat material, the cut-out plates do not cut out at one edge, but rather bend the separated flap around this edge. The die-cut cutting plate also does not separate completely, but gives the partially separated piece of the flat material a specific shape.

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If the 5 ¹ Ona, ie the base area of the machining roughness, is to be adjustable, two longitudinal sides of at least one cheek can have different shapes. One long side can, for. B. rectilinear and the other shaped, or both may be shaped differently. By rotating this cheek by 180 ° around the vertical or the horizontal transverse axis, if necessary also around the longitudinal axis, one or the other long side can be turned towards the machining area. Another possibility of changing the shape of the machining area is to attach filler pieces to the cheeks, which perform functions similar to those of the cheeks and result in a Y & zrkleijB & rvang of the machining area. Replacing one or more cheeks can also be counted as part of this type of adjustability.

Applications are also the divided cutting plate conceivable in which only a handling edge is to change what can be done a _ih rer droi bodies by _™ Ε a ^ '. In theory, it is possible to prepare all four longitudinal edges of a cheek as machining edges and to turn them optionally towards the machining area. A narrowing results in the case of cheeks in which the angle between the punching side facing the processing space and the adjacent longitudinal side is not 90. Experience has shown that an angle of 90 is sufficient for cutting work on flat material up to 1 or 2 mm. Stronger material

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Requires a clearance angle of 1 "to 2 °, which corresponds to a vertical angle of 91" ^{1 to} 92 °. ! Door bending and pulling parts, the vertical angles are often less than 90 °

In Fig. 1 is an embodiment of a split cutting plate showing two different connection

^ types shown. This cutting plate consists of only m-iel cheeks and allows the production of slot openings of fixed width and adjustable length. At the same time, the flat material is deep-drawn around the opening by the matching cutting punch (not shown). The two connections of the cheeks are shown differently. In reality, of course, both of them can be carried out either with a screw and nut (left) or with a thorough approach and an Eeil (right). In principle, it is also possible to produce this cutting plate from four cheeks.

"Set by the narrow sides as separate parts" trained and pushed onto the screws or the lugs. These narrow side cheeks would have to be used for attachment have only one through hole. :

In Figures 2 to 4- is a heavier version of a split cutting plate with four cheeks and their one

position on an associated cutting punch explained. The adjustability of the processing space Br8 consists in particular in the possibility of continuous displacement

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all cheek connections, claim, ε-.about also -by optional use "and setting of the mill piece J? s. The Machining space is longitudinal through the indentation Eb Cheek H is not straight. Stops acting directly on the cheeks, d. H. Press screws Ps secure the setting against moving and two different constructive solutions are shown for this, namely on the one hand the noses Hs on the cheeks K and L and on the other hand the approaches As den'Wangen H and J. The rail-like approaches As to the The front connection surfaces of the cheeks H and L grip into corresponding grooves in the cheeks J or »H. Unless a If there is a fit between the groove and the shoulder, the vertical machining forces can also be absorbed and distributed will . In the case of heavy cut panels, interlocking connecting surfaces are to be used to protect the connecting means (screw, Wedge) advantageous. Only for the purpose of power transmission are • there are several, narrow and not deep sides in the long sides Provide grooves and equip the end faces with matching projecting rail-like approaches.

To adjust the divided cutting plate to the dimensions of a cutting punch suitable for cooperation with the cutting plate, the cheeks H to I «are placed on a flat surface with the machining edges 27, 29, 31 · 33 suitable for the work and facing upwards against the punch I ¹ I ge

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lays raid after joining with still loose connections F placed on the stamp with the insertion of plates Pl corresponding in thickness to the required clearance and in this location held by additional means Mp Av until the connections are made. The flat surface can be designed as a support for a switchable magnetic disk Mp serving to hold the cheeks in place. That additional means for holding the cheeks in place can be a stop device Av.

The section X-X in Fig. 3 represents the cutting plate on a Magnetic disk Mp and its setting with platelets Pl for a sunk cutting punch St. The thickness of the platelets corresponds to the necessary cutting clearance. After setting up on the stamp the magnetic plate is switched on, which holds the cheeks flat on the surface Fl until the screws S are tightened. The sharp processing edges 27, 29, 31 and 33 and the vertical angle of more than 90 ° show that it is a separating cut plate for flat material with a thickness of a few mm. Unless there is a magnetic disk is available, the individual cheeks can also be adjusted by means of a stop device Av the flat surface and pressed against the punch.

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In the case of larger, divided cutting plates, there is the possibility of to equip or assemble one of the cheeks with a column guide. Smaller cutting plates can be used as Free cuts can be used or a plate that has been freely punched out with it for the first time can serve as a plate guide.

Split cutting plates with adjustment option must also do not consist entirely of adjustable cheeks. The ultimate is the multiple usability and that Efficient production without machining of closed surfaces on plate openings.

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Claims (8)

Patent claims: 1. Split cutting plate for punching work from cheeks, the end face collide on the long side, are directly connected to one another, characterized in that the connection between at least two end faces on the longitudinal side colliding V / annex (H, J) by adjustment ™ is adjustable along the long side and the setting the connection by directly acting on the associated cheek adjustable stops (Ps) on the long side secured to the associated cheek abutting cheek is. 2. Sehnittplatte according to claim 1, characterized in that along the lengthwise side of the cheek that adjoins the assigned cheek Cheek an elongated hole that enables adjustment t is trained. 3. Sehnittplatte according to claim 1 or 2, characterized in that that the cheeks interlock adjustably. 4 |. Cut plate according to claim 2 or 3 »characterized in that that the cheeks are connected to one another by means of wedges or screws are. 609837/0007 5. Cutting plate according to one of claims 1 to 4, characterized in that that at least one cheek can be connected to an additional cheek or a filler piece (Fs) 6. Cutting plate according to claim 3, characterized in that the cheeks interlock via several approaches and assigned grooves. 7. Cutting plate according to one of claims 1 to 6, characterized in that that at least one cheek has more than one processing edge (27 to 34-) and an associated processing surface and possibly more than two "connecting surfaces". 8. Cutting plate according to one of claims 1 to 7 _5, characterized in that at least one cheek in the. Is rotated 180 ° relative to one of its three axes of the body connectable with the \ such a manner, then the processing space facing working edge and working surface has a different shape than that which is facing the processing space in the starting position. · ■. 6 0 983 7/0007
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