DE202022104415U1 - slider assembly - Google Patents

Abstract

Slide tool (100) having a slide bed (2) and a slide (3) movably mounted thereon on a dovetail guide by means of slide plates (50, 51), having a slide body (30) and a slide holder (31) formed thereon, wherein a first plane of symmetry ( S1) of the slider body (3) and/or slider bed (2), which runs through the center of the slider (3) and/or slider tool (3), the slider holder (31) having a symmetrically to a second plane of symmetry (S2) has a dovetail-shaped holding section (32), and the first plane of symmetry (S1) does not coincide with the second plane of symmetry (S2), so that sliding plates (50, 51) are provided on sliding surfaces of the dovetail-shaped holding section (32), which are asymmetrical to the first plane of symmetry (S1) are arranged.

Description

The invention relates to an improved slide arrangement, in particular a sleeve slide and a wedge drive slide. The invention relates in particular to a quill slide for fastening in a multi-part tool, in particular in a slide unit with an upper part and a hold-down device, the quill slide comprising at least one quill.

Sheet metal parts for the automotive industry are becoming more and more complex and the design of the tools is often pushed to the limit of what is feasible. The parts produced should be finished as far as possible at the end of the forming and stamping process. Thus, several functions of the active parts in different angular positions must be coordinated and matched to one another in the tool. Modern sliders with drivers installed at the top or bottom are taking on an ever-increasing share of such functions.

The invention can also be used in a wedge drive with a slide element receptacle, a movable slide element and a driver element, with sliding surfaces being provided between the slide element and driver element and a guide device with sliding surfaces on the slide element and sliding surfaces on the slide element receptacle being provided between the slide element and slide element receptacle.

A wedge drive, also referred to as a slide, basically serves to deflect pressing forces into stamping or forming tools in order to be able to use them to process, in particular, oblique or rearward sections of body parts. Typically, the slide element holder is connected to a part of the press tool in which the wedge drive is to carry out the stamping or forming work. A wedge drive is referred to as an upper part slide if its slide element receptacle is fastened in the upper part of the press tool that is connected to the moving press ram. One speaks of a bottom slide when its slide element receptacle is connected to the lower press tool fastened to the rigid press bed. Irrespective of which part the slide element receptacle of the wedge drive is connected to, this usually has a linear guide in which the movable slide element can move back and forth, but as such is firmly connected to the slide element receptacle. The driver element is usually fixedly connected as a rigid element to the part of the press tool to which the slide element receptacle is not attached. The driver element usually has wedge bevels and is used with these in relation to the movable slide element as a drive element. However, there are also limits to the use of wedge slides, especially if you cannot use a driver in the tool for reasons of space.

So far, quill slides have been used to some extent here. Quill slides are known in a wide variety of applications and configurations. A quill is used to hold and move a machining tool, for example a punching tool, with a movement in the longitudinal direction, ie axially, taking place. This movement is effected by a quill driver. In order to avoid unwanted deflection of the quill, it usually runs in a quill holder. Quill driver and quill holder are usually permanently installed in the tool or parts of it.

Quill slides are, for example, from the publication WO 2007/006161 A1 known. Apparatus is disclosed herein wherein the movable mold half includes pushers and ejectors and quill pushers angled relative to each other and a backing plate for supporting the quill pushers supported on a support surface received by a backing plate and disposed perpendicularly to the quill pushers. Sliders and quill slides are actuated by two-way hydraulic cylinders.

the DE 101 53 721 C5 discloses a tool for cylinder crankcases, which is made up of at least two tool parts. The tool has several slides for demolding cavities and bores. To create the cylinder bores, the tool includes cylindrical quills. The quills can be part of a slide, ie in the form of quill slides. The sleeves run through the tool from a wall on the cylinder head side to a wall on the crankshaft side.

From the DE 10 2006 016 078 A1 another quill slide is known. on. From the DE 231 408 A1 is an attachment for universal tool milling machines for planing moulds, punches and electrodes for spark erosion. The additional device consists of a cast housing in which the working carriage with a swiveling device for the tool holder moves up and down in a prismatic guide. Alternatively, it has a long cylindrical bore in which a quill in the form of a piston rod performs the lifting movements and the rotatable tool holder is provided at the lower end of the quill. In order to prevent the quill from rotating axially, a keyway is machined over the entire length (coaxial) and it is guided by a key fixed in the housing. In this device, an actuating cylinder is provided on the top cover, which secures the piston rod in the quill. A bearing point protrudes below to accommodate the shaft.

In the prior art, the focus is on developing a slide element that creates a guide for the movable slide element that enables even better running accuracy, which optimally converts the applied press force into the punching or forming movement, compensates for the side shifts and ensures a uniform power distribution should cause.

In the prior art, for example, solutions are known in which the movable slide element has a type of dovetail connection, with the slide element receptacle being designed as a corresponding counterpart, so that the slide element engages with its dovetail-like side in the corresponding slide element receptacle and is guided and held therein in a self-centering manner can be. Great importance is attached to the symmetrical arrangement. The surfaces on the slide element and slide element receptacle provided by the dovetail shape are supported symmetrically on one another, with forces directed in different directions being able to be absorbed due to the surfaces standing at an angle to one another in the dovetail shape.

In particular, the state of the art specifically teaches a specific symmetrical arrangement, since this involves smooth running, symmetrical distribution of forces and other properties and advantages. For this purpose, sliding plates are proposed on two sides of the slide element or the slide element receptacle, with these being arranged symmetrically to achieve the above-mentioned goals. It is e.g. B in the EP 2 197 660 B1 solved, which has proven to be disadvantageous in particular in relation to the installation safety.

This symmetrical dovetail solution is provided with sliding surfaces for supporting sliding plates and designed to engage a corresponding dovetailed socket on the slide bed so that the sliding plates are arranged symmetrically and in an L-shape. With a symmetrical dovetail on the slider and a correspondingly symmetrically shaped receptacle on the slider bed and slider body, the sliding plates positioned between them are also in a symmetrical arrangement.

“Symmetrical” within the meaning of the present invention is defined analogously. The relevant geometries and surfaces involved in the interaction of the slider with its contour on the corresponding mount on the slider bed are considered.

However, due to asymmetrical installation situations and the high accuracy requirements in the complex tools and the unavoidable manufacturing tolerances, there are high requirements for correct and precisely fitting installation. The tools are often used as intended in an asymmetrical installation situation, so that installing them the wrong way round or incorrectly can have fatal consequences. With the solution known from the prior art, however, installation rotated by 180° in relation to the target situation is possible, so that the tool and the parts to be machined can be severely damaged during operation (sometimes immediately).

This problem can occur in particular in the case of a symmetrical dovetail guide, since installing a guide and sliding bearing that is basically symmetrically arranged and rotated by 180° can lead to the problems mentioned. For example, if a punch attached to the slide is off-centre, rotating it by 180° may result in a crash in the tool.

It is therefore the object of the present invention to overcome the aforementioned disadvantages and to provide a slide which on the one hand enables good running properties and a desired distribution of forces, but on the other hand improves installation safety and incorrect installation is avoided.

This object is achieved by the combination of features according to claim 1.

A basic idea of the invention is that, unlike in the prior art, there is no symmetrical, but rather an asymmetrical arrangement of a dovetail connection, in particular with regard to the operative connection between slide and slide bed. Especially in this definition in relation to the center of the tool (in the case of wedge drive tools) or the center of the slide (in the case of the quill slide), an asymmetrical arrangement of a dovetail connection is to be implemented, so that an overall non-symmetrical arrangement of the dovetail connection and the plain bearing plates that may be arranged on it is obtained.

• - Eine Symmetrieebene durch den schwalbenschwanzförmigen Halteabschnitt ist versetzt zur Symmetrieachse gebildet durch die Werkzeugmitte oder die Form des Schwalbenschwanzes am Schieber bzw. dessen Außenkontur ist per se unsymmetrisch gestaltet (z. B. eine Seite ist verbreitert oder anders geformt im Vergleich zu der gegenüberliegenden Seite und im Vergleich zu einer symmetrischen Schwalbenschwanzform).
• - eine der beiden für die Gleitplatten am Schwalbenschwanz des Schibers ausgebildete Auflagefläche ist in Bezug auf eine Position in der Höhenrichtung betrachtet niedriger bzw. höher als die diametral gegenüberliegende andere Auflagefläche). Im Ergebnis sind die Gleitplatten dadurch auch in anderen relativen Positionen in Höhenrichtung versetzt angeordnet.
• - die beiden zuvor genannten Auflageflächen am Schwalbenschwanz zur Auflage der Gleitplatten können auch in einem unterschiedlichen Anstellwinkel ausgebildet sein.

To this end, the following measures are proposed with regard to the dovetail connection between the slide and the corresponding slide bed:

• - A plane of symmetry through the dovetail-shaped holding section is offset to the axis of symmetry formed by the center of the tool or the shape of the dovetail on the slide or its outer contour is designed asymmetrically (e.g. one side is widened or shaped differently compared to the opposite side and compared to a symmetrical dovetail shape).
• - one of the two bearing surfaces designed for the sliding plates on the dovetail of the slide is lower or higher, respectively, in relation to a position in the height direction than the diametrically opposite other bearing surface). As a result, the sliding plates are thereby offset in other relative positions in the height direction.
• - The two aforementioned bearing surfaces on the dovetail for supporting the sliding plates can also be formed in a different angle.

It is pointed out in this context that the aforementioned features that lead to an asymmetrical arrangement or shape relate exclusively to those features that make a contribution to the connection of the dovetail and in particular the outer contour for the support of the sliding plates and the Dimensions represent the sizes relevant to symmetry.

A solution is particularly preferred in which the deviation of the two planes (tool plane and plane of symmetry of the dovetail joint) are close to each other but offset next to each other in order to achieve the advantages of good guiding properties and optimal force distribution on the one hand and a clear mounting position of the slide on the slide bed on the other.

According to the invention, a slide tool is proposed for this purpose, having a slide bed and a slide mounted on a dovetail guide so that it can move by means of sliding plates, having a slide body and a slide holder formed thereon, with a first plane of symmetry S1 of the slide body and/or slide bed being present, which passes through the center of the slide and/or slide tool, the slide having a dovetail-shaped holding section formed into a second plane of symmetry S2, and the first plane of symmetry S1 does not coincide with the second plane of symmetry S2, so that sliding plates provided on sliding surfaces of the dovetail-shaped holding section are asymmetrical to the first plane of symmetry are arranged.

According to one concept of the invention, the arrangement of the sliding plates and thus the position of the dovetail-shaped holding section is not placed in the center of the tool and thus not in the plane of symmetry of the slide tool or slide bed, but offset laterally or transversely thereto. As a result, the sliding plates can remain the same parts, but the dovetail-shaped holding section is formed eccentrically on the slide. An unintentional assembly twisted by 180° is thus ruled out.

In a further embodiment of the invention, it is provided that the slide is mounted on a driver on a side of the slide opposite the dovetail guide. In this respect, the invention can be implemented with a classic wedge drive consisting of a slide bed, slide and driver.

It is also advantageous if the slide (particularly when implemented as a quill slide) is mounted in at least one guide bushing so that it can move axially along a central, central slide axis X. Advantageously, two guide bushings are provided axially in series one behind the other.

In a further embodiment according to the invention, it is provided that the sliding plates are L-shaped and protrude with their legs forming the L-shape into a respective recess on the slide bed. Particularly advantageously, the sliding plates are arranged on the slide at an angle with respect to the two planes of symmetry. In this way, the sliding surfaces also run obliquely to the planes of symmetry.

It is also advantageously realized that a groove is provided on the slide bed for a retaining means which protrudes from the dovetail-like retaining section and engages in the groove or guide groove. According to one concept of the invention, the guide groove is positioned centrally and symmetrically to the tool center relative to the lateral tool edges, while the retaining means on the dovetail is offset relative to the plane of symmetry of the dovetail projection, in particular offset transversely to the plane of symmetry.

For this reason too, the slider can only be mounted on the slider bed in the intended position. If the slide were rotated by 180°, there would be a collision during assembly due to the geometric conditions between the position of the Retaining means and the guide groove. This also prevents incorrect assembly.

It is also preferred if the center and in particular the central slide axis X runs within the second plane of symmetry S2.

In the sense of the present invention, the plane of symmetry is understood to mean those planes in which the affected parts of the slide tool are each symmetrical in their position in relation to this plane. Considering, for example, the guide groove of the slide bed, this is symmetrical in shape and position, for example, to the first plane of symmetry of the slide bed, even if the slide bed does not have perfect symmetry in every detail. Alternatively, instead of the plane of symmetry, the center of the part can also be corresponding in a concept according to the invention.

In this case, according to the invention, the center of the dovetail-shaped holding section and the center of the tool or the center of the slide fall apart.

It is therefore particularly preferred if the second plane of symmetry S2 is offset relative to the first plane of symmetry S1 by a distance y transverse to the slider axis X or the center of the slider, whereby this is only a comparatively small deviation (e.g. 1 - 5% of the tool width).

In a further embodiment of the invention it is provided that a releasable blocking means is provided at a tool-side end of the guide groove, which prevents complete disassembly of the slide along the dovetail guide as long as the blocking means is in its blocking position.

• - der Schieber weist einen runden, rechteckigen oder polygonal geformten Querschnitt aufweist;
• - die wenigstens eine Führungsbuchse weist einen runden, rechteckigen oder polygonal geformten Querschnitt auf;
• Andere vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet bzw. werden nachstehend zusammen mit der Beschreibung der bevorzugten Ausführung der Erfindung anhand der Figuren näher dargestellt.

Other preferred features are:

• - the slider has a round, rectangular or polygonal shaped cross-section;
• - The at least one guide bushing has a round, rectangular or polygonal shaped cross-section;
• Other advantageous developments of the invention are characterized in the dependent claims or are presented in more detail below together with the description of the preferred embodiment of the invention with reference to the figures.

• 1 eine beispielhafte perspektivische Darstellung eines Schieberwerkzeugs (Pinolenschieber);
• 2 eine Seitenansicht auf die Ausführung gemäß 1;
• 3 ein alternatives Ausführungsbeispiel der Erfindung (Keiltriebwerkzeug);
• 4 eine Seitenansicht auf die Ausführung gemäß 3;
• 5 eine erste Schnittansicht durch das Ausführungsbeispiel gemäß 1;
• 6 eine Vorderansicht des Ausführungsbeispiels gemäß 1 und
• 7 eine weitere Schnittansicht durch das Ausführungsbeispiel gemäß 1,
• 8 ein Detail aus 7 und
• 9 ein alternatives Ausführungsbeispiel einer unsymmetrischen Schwalbenschwanzverbindung.

Show it:

• 1 an exemplary perspective view of a slide tool (quill slide);
• 2 a side view of the embodiment according to FIG 1 ;
• 3 an alternative embodiment of the invention (key drive tool);
• 4 a side view of the embodiment according to FIG 3 ;
• 5 a first sectional view through the embodiment according to 1 ;
• 6 a front view of the embodiment according to FIG 1 and
• 7 a further sectional view through the embodiment according to FIG 1 ,
• 8th a detail out 7 and
• 9 an alternative embodiment of an unsymmetrical dovetail joint.

The invention with reference to the 1 until 9 explained in more detail, with the same reference numbers indicating the same structural and/or functional features.

In the 1 12 is an exemplary representation of a slide tool 100 designed as a quill slide. The slide tool 100 has a slide bed 2 and a slide 3 mounted movably on a dovetail guide by means of sliding plates 50, 51.

The slider 3 has a slider body 30 (at the front end of which a machining tool can be attached) and a slider holder 31 formed thereon for supporting the slider 3 on the slider bed 2.

The slide body 30 has a central axis X and a first plane of symmetry S1, which coincides with the plane of symmetry of the slide bed 2 and thus characterizes a common plane of symmetry and thus the center of the slide tool.

The slide holder 31 in turn forms a dovetail-shaped holding section 32 which is symmetrical to a second plane of symmetry S2. However, the first plane of symmetry S1 and the second plane of symmetry S2 do not coincide, but are offset by the distance y (as can be seen in the 6 until 8th recognizable) next to each other, so that the sliding plates 50, 51) are provided on the sliding surfaces of the dovetail-like holding section 32, are intended to be arranged asymmetrically to the first plane of symmetry S1. If the assembly is twisted, the slide can no longer be brought together with the driver (in the case of a wedge slide) or in the guide bushings 40 (for a quill slide 100), since these must be offset from one another by said distance y.

In the embodiment according to FIG 3 and the 4 , in which a wedge drive tool 100 is shown, the slide 3 is mounted on a driver 60 on a side of the slide 2 opposite the dovetail guide.

With sleeve slide 100, it can be seen that slide 3 is mounted in two guide bushings 40 so that it can move axially along a central, central slide axis X, and the guide bushings enclose the slide like a ring.

In both embodiments, the sliding plates 50, 51 are L-shaped and protrude with their one (short) leg 50a, 51a forming the L-shape into a respective recess (recess) on the slide bed 2.

In the 5 and 7 It is easy to see that a central guide groove 22 is provided in the slider bed 2 for a retaining means 33 which protrudes from the dovetail-like retaining section 32 and engages in the guide groove 22 . The holding means 33 can be a screw with a screw head.

In the 6 and 7 it is again easy to see that the center and in particular the central slide axis X runs within the first plane of symmetry S1 and the second plane of symmetry S2 is offset from the first plane of symmetry S1 by a distance y transverse to the slide axis X or slide center.

In the 5 It can also be seen that a releasable blocking means 24 is provided on the tool-side end of the guide groove 22, which prevents the complete disassembly of the slide 3 (from its mounting position to a removal position) along the dovetail guide as long as the blocking means 24 is in its (in the 5 shown) blocking position.

In this exemplary embodiment, the slide 3 and the guide bushings 40 of the quill slide have a circular cross section, so that the center of the circle also determines the center of the slide 3 and the position of the plane of symmetry S2.

the 8th shows a detail 7 to illustrate how the plane of symmetry S2 of the dovetail guide and the position of the slide plates 50, 51 is offset from the plane of symmetry S1 of the slide bed and slide body by the distance y.

the 9 Figure 13 shows an alternative embodiment of an unsymmetrical dovetail connection in which the angles A and B are different, whereby the bearing surfaces 60, 61 for the sliding plates 50, 51 have different angles of attack.

In the 8th Another possible embodiment with the vertical direction H is indicated, in which the bearing surfaces 60, 61 for the sliding plates 50, 51 can have the same angle of attack, but are offset in the relative position to one another in the vertical direction H. An asymmetrical solution can also be obtained from this in each case.

According to the invention, an advantage of the solutions shown is the fact that the two sliding plates 50, 51, despite the asymmetrical geometry of the dovetail, are nonetheless designed as identical parts and no different components are required.

The implementation of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different designs.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• WO 2007/006161 A1 [0006]
• DE 10153721 C5 [0007]
• DE 102006016078 A1 [0008]
• DE 231408 A1 [0008]
• EP 2197660 B1 [0011]

Claims (13)

Slide tool (100) having a slide bed (2) and a slide (3) movably mounted thereon on a dovetail guide by means of slide plates (50, 51), having a slide body (30) and a slide holder (31) formed thereon, wherein a first plane of symmetry ( S1) of the slider body (3) and/or slider bed (2), which runs through the center of the slider (3) and/or slider tool (3), the slider holder (31) having a symmetrically to a second plane of symmetry (S2) has a dovetail-shaped holding section (32), and the first plane of symmetry (S1) does not coincide with the second plane of symmetry (S2), so that sliding plates (50, 51) are provided on sliding surfaces of the dovetail-shaped holding section (32), which are asymmetrical to the first plane of symmetry (S1) are arranged. Slider tool (100) having a slide bed (2) and a slide (3) movably mounted on a dovetail guide by means of sliding plates (50, 51), having a slide body (30) and a slide holder (31) formed thereon, which has an asymmetrically shaped dovetail-like formed retaining section (32) which engages in a correspondingly shaped receiving section on the slider bed. slide tool (100) according to claim 1 or 2 , characterized in that the slide (3) is mounted on a driver (60) on a side of the slide (2) opposite the dovetail guide. slide tool (100) according to claim 1 or 2 , characterized in that the slide (3) is mounted axially movable in at least one guide bush (40) along a central, central slide axis (X). Slider tool (100) according to one of Claims 1 until 4 , characterized in that the sliding plates (50, 51) are L-shaped and project with their legs (50a, 51a) forming the L-shape into a respective recess (21) on the slide bed (2). Slider tool (100) according to one of the preceding claims, characterized in that a guide groove (22) is provided on the slide bed (2) for a retaining means (33) which protrudes from the dovetail-like retaining section (32) and engages in the guide groove (22). Slider tool (100) according to one of Claims 1 and 4 to 6, characterized in that the center and in particular the central slide axis (X) runs within the first plane of symmetry (S1). cam tool (100). claim 1 and one of the preceding claims 3 until 7 , characterized in that the second plane of symmetry (S2) is offset relative to the first plane of symmetry (S1) by a distance y transversely to the slide axis (X) or slide center. Slider tool (100) according to any one of the preceding Claims 6 until 8th , characterized in that a releasable blocking means (24) is provided at a tool-side end of the guide groove (22), which prevents the complete disassembly of the slide (3) along the dovetail guide as long as the blocking means (24) is in its blocking position. Slider tool (100) according to one of Claims 4 until 9 , characterized in that the slide (3) has a round, rectangular or polygonal cross-section. Slider tool (100) according to one of Claims 4 until 10 , characterized in that the at least one guide bushing (40) has a round, rectangular or polygonal cross-section. Slider tool (100) according to one of the preceding claims, characterized in that assembly of the slide (3) rotated through 180° with respect to its intended assembly is prevented due to the asymmetrical configuration. Slide tool (100) according to one of the preceding claims, characterized in that the slide plates (50, 51) are arranged on the slide (3) at a different angle in relation to the slide axis X in each case.

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