DE102015103114A1 - Improved tool shifter and method for its manufacture - Google Patents

Abstract

The present invention relates to a tool slide, which is designed as a wedge drive, with at least two movably slidably adjoining components 2, 3; 3, 4, wherein the components 2, 3; 3, 4 sliding surfaces are arranged sliding against each other, wherein a sliding surface as wear-resistant stationary sliding surface and the corresponding sliding surface as wear-susceptible Opfergleitfläche 5, 9 and in particular interchangeable Opfergleitfläche 5, 9 is formed, wherein in a sliding surface 6, 8; 5, 9 as close as possible to a tool-side leading edge 14 at least one chip groove 15 or Spanabführnut 15 is arranged, the Standgleitfläche is a hartstoffinfiltrierte or a hard material coated sliding surface, and a method for producing a tool slide, in particular a tool slide, which is designed as a wedge drive, and between the parts 2, 3, 4 of the slide assembly sliding surfaces 5, 6, 8, 9, 11, 12 has, wherein each one of the corresponding sliding surfaces is designed as a stationary sliding surface and one of the corresponding sliding surfaces as Opfergleitfläche, in particular interchangeable Opfergleitfläche, is formed the stationary sliding surfaces are directly formed on the part of the slide and are infiltrated or coated with a layer of hard material, or the stationary sliding surfaces are designed as trays or plates and the trays or plates are hard-material infiltrated or hard-coated.

Description

The invention relates to a tool slide and a method for its production.

Tool slides or, as they are also called, wedge drives are used in metalworking tools, e.g. used in forming presses. Associated with these wedge drives are usually facilities or tools that allow punching or otherwise deforming. A conventional wedge drive has an upper guide part comprising a slider element and a slider guide element and a lower guide part comprising a driver element and vice versa. The wedge drives are moved by the slider guide element by a drive applying a generally vertical pressing force. On the part of the driver element wedge drives are mounted in the tool or the press on a base plate on which the workpiece to be machined is placed directly or via a corresponding support device.

From the DE 26 40 318 B2 is known a wedge drive for redirecting a vertical pressing force in an angularly acting force for the forming process. This wedge drive consists of a drive wedge, on which acts a vertical force of a corresponding work press, and a slide wedge, which transmits the force in the horizontal. The driver wedge and the slide wedge run either over a rounded cooperating region or, in another embodiment, over a roller.

From the DE 24 39 217 A1 a wedge press with a prism-shaped wedge guide is known, wherein the contact surfaces are roof-shaped or channel-like and with the roof or gutter extending over the entire pressure-receiving width of the wedge.

From the DE 23 29 324 B2 is a wedge press with a device for preventing unwanted movements of the wedge with a prism-shaped wedge guide known.

Usually, overhead wedge drives used in the body industry consist of a driver, a slider, and a slider receiver. On the top of the slider recording acts a vertical force that pushes the slider recording down. The driver is firmly anchored in the tool, so that when pressed on the slide holder, the slider anchored in the slider holder is pushed in any direction outside the vertical working direction.

Frequently, overhead wedge drives are used. In this design, the slider depends in his leadership movable in the slide holder. The driver sits rigidly in the lower part and specifies the working direction of the slider. During the downward stroke of the press, the spring-loaded slider sets on the driver and is pushed by the continuing slide holder over the driver surface in the working direction.

The known from this prior art wedge drives have disadvantages, so that the slide used often have short lives and are exposed due to their structural design high wear. They therefore often have to be replaced after short running times, because they show signs of wear, so that an exact deflection of the vertical pressing forces is no longer possible, which leads to unacceptable tolerances in metalworking.

From the DE 197 53 549 C2 is known a wedge drive, which is produced in a continuous industrial production process and should have long service lives. For the guidance of the slide in the slide holder angle brackets are present, which are formed of bronze and have attached in the angle bar sliding elements made of graphite. In general, this wedge drive for deflecting a vertical pressing force with a driver, a slider and a slider receiving equipped, the driver has a prismatic guide and the travel of the slider on the driver is shorter than the travel of the slider on the slider recording and the ratio of the paths to each other is at least 1 to 1.5 and the angle α between the traverse paths is 50 ° to 70 °. In such a slider, the driver element has a prismatic surface, wherein the flanks of the prismatic surface are formed sloping outwardly. In addition, this wedge drive has forced return brackets on two opposite sides in respective grooves of the slider element and the driver element. In this way, in the case of a breakage of the slider element in its starting position retrieving spring element ensures a return of the slider element at spring break and thereby to avoid tearing out of screwed punching elements. The slider element is attached to the slider guide member via the angle brackets and retaining screws and can be moved along the angle strips relative to the slider guide element.

From the US 5,101,705 A Another wedge drive is known in which the slide element hangs on angle strips or by means of which it is attached to the slide guide element. In this case, it is necessary that the adjacent plates or elements required for fastening are precisely ground to the between Slider element and slide guide element required to guarantee running clearance. In this wedge drive as well as in the other known wedge drives, in which slide guide element and slide element are interconnected via angle strips and screws, is disadvantageous that all tensile forces are introduced into the screws, which in particular at the moment by an extension of the screws or takes place of the surrounding material, the running clearance of the mutually moving slider guide elements and slide elements is impaired. This subsequently leads to a poorer stability, since the wear is particularly increased due to the bracing of the tool in this area. In addition, it proves to be disadvantageous that the slider element can not extend laterally when heated, since it is narrowed by the angle strips in this regard. This can also lead to increased wear of the tool.

From the EP 1 197 319 A1 a wedge drive is known in which the slider element and the slider guide element are held together by means of guide clips. As a result, it should not be necessary to exactly grind additional angle strips or other devices connecting these two elements in order to guarantee a required running clearance. In addition, the running clearance is not affected even when heating the wedge drive or the tool, since not only manufacturing tolerances, but also occurring expansions of the material can be absorbed by the connection via a guide bracket. The stability of the wedge drive is therefore no longer impaired or shortened. Despite the omission of a grinding high running accuracy can be achieved. The guide brackets engage in this form-fitting manner in the slider guide element, whereby the slide member depends on the guide guide elements on the slide guide element via this positive engagement. As a result, it is not necessary to provide a grip on the slider guide element via screws, which are on the one hand wear-prone and on the other hand can cause an already mentioned impairment of the running clearance when heated.

From the DE 10 2008 061 420 B4 a wedge drive is known, in which the bronze material use is to be reduced, the power transfer area is optimized and which has a stable slide bed area, wherein a slide bed, a slide wedge and a driver are present and wherein for the slidable coupling of the slide wedge in the slide bed at least one bearing cam is present, wherein the bearing cam engages at least one bearing opening in a side wall of the slide bed from the outside and engages in a recess in the slide wedge, wherein the slide wedge on the bearing cam and the bearing cam is supported on a wall bounding the bearing opening.

In the prior art, it is well known to form the slide so that the sliding surfaces are formed at least with respect to a surface of bronze or lubricated bronze plates. Gate valves are extremely complex and expensive manufactured components made of cast steel, so that it is endeavored to protect the sliding surfaces against excessive wear, that the bronze plates are provided as a softer wear partner, which are relatively easy to replace and relatively inexpensive.

For some time, however, it has become apparent that these plates used as wear victims no longer wear in the way intended. Rather, it has to be stated that both the wear sacrificial plates and the hardened corresponding steel surfaces wear out in the same way. As a cause of this behavior can often be identified as the cause of impurities caused by the pressing process and reflected as deposits in the tool. These impurities may be, for example, baubles when punching aluminum sheets, baubles and chips when punching sheets with increased strength values, and baubles and tinder pieces when punching sheets in hot forming lines. These particles have high strength or high hardness abrasive properties. In conjunction with the lubricants used on the sliding surfaces, these impurities can result in aggressive grinding pastes, which lead to increased wear of the sliding surfaces.

In the case of tool slides, this is particularly critical because these sliding surfaces are essentially horizontal.

The object of the invention is to reduce the wear behavior of slideways in press tools under extreme conditions (e.g., stamping aluminum, higher strength sheets, and hot stamping sheets), e.g. to improve tool slides or wedge drives and to increase the service life of the sliding guides.

The object is achieved by a wedge drive with the features of claim 1.

Advantageous developments are characterized in the subclaims.

It is another object to provide a method of manufacturing a wedge drive with which wedge drives have increased tool life and improved wear performance.

The object is achieved with the features of claim 6. Advantageous developments are characterized in the dependent claims.

According to the invention, it has been recognized that obviously the material properties of the processed materials have changed in such a way that the normal mechanisms with regard to the wear between the side and the sacrificial side no longer apply, although the stand side already consists of hardened material. The amazing thing is that the differences in rockwell hardness in terms of sacrificial sites and standing pages are so high, around 35 HRC, that you could not even assume that there was any kind of wear on the stand side, and certainly no wear, which is comparable to that on the victim side.

The invention relates to the geometric design of the sliding elements. These are for a targeted removal of the abrasive dirt with appropriate geometry, in particular grooves for dirt removal, equipped.

The geometric adjustments are as follows: The front of the moving slider is equipped, for example, with a radius <0.2 mm. The lack of start-up chamfer or the missing, large standard radius on the sliding-element edge makes it difficult or prevents the penetration ("slipping in") of soiling.

Optionally, the front edge of this slider can also be pronounced oblique or wedge-shaped. This chamfer of the sliding element edge additionally causes a displacement of the dirt particles to the outside.

• 1. Bewegter Körper hebt systembedingt im Betrieb nicht ab, Gleitführung wird nur im Maße des Systemhubs verfahren (z.B. Unterteil-Schieber). Gleitführung wird hierdurch partiell freigelegt: – Anordnung der Spanrillen ausschließlich im vorderen Bereich des Gleitelementes, maximal in der Ausdehnung der Hublänge. Einsatz von maximal drei Spanrillen.
• 2. Bewegter Körper hebt systembedingt im Betrieb ab, Gleitführung wird hierdurch zeitweise komplett freigelegt: – Anordnung der Spanrillen über die komplette Ausdehnung des Gleitelementes. Menge der Spanrillen richtet sich nach der Länge des Systemhubes sowie der Länge des Gleitelementes.

In the course of the sliding element chip grooves are arranged according to the application. The following movement profiles are distinguished:

• 1. Moving body does not lift off during operation due to the system. Sliding guide is only moved to the extent of the system stroke (eg lower part slide). Sliding guide is thereby partially exposed: - Arrangement of the chip grooves only in the front area of the sliding element, maximum in the extension of the stroke length. Use of a maximum of three chip grooves.
• 2. Moving body lifts due to the system during operation, sliding guide is thereby temporarily completely exposed: - Arrangement of the chip grooves over the entire extent of the sliding element. The amount of chip grooves depends on the length of the system stroke and the length of the sliding element.

Arrangement of chip groove for movement profile 1:

The distance of the chip grooves depends on the length of the system stroke. The first additional chip groove is located approximately at 1/5 to 1/4 of the system stroke. It assumes the function of the first post-cleaning, in the event that dirt particles get between the sliding guide despite the wiping edge.

At about 2/3 to 3/4, as well as in about the length of the Systemhubes more flutes are arranged. They serve as further purification stages for very small dirt particles that could not be removed by the scraping edge and the first chip grooves.

Arrangement of the chip grooves for movement profile 2:

In contrast to the movement profile 1, contamination of the sliding surface over the entire guide length is possible with the movement profile 2. Accordingly, the controlled removal of impurities must be ensured over the entire length of the sliding guide. For this purpose, the chip grooves are distributed over the entire length of the sliding element at a uniform spacing. The distance of the chip grooves is about 3/4 of the sliding stroke. Changed distances of the chip groove arrangement are possible.

For wide sliding surfaces, the removal of chips from the effective range can be supported by longitudinal grooves. The ends of the chip grooves open into these longitudinal grooves. Due to the oblique arrangement of the chip grooves, the dirt particles are conveyed by the sliding movement in these longitudinal grooves and thus outside the effective range of the sliding guide.

The size of the sliding surface, which is destroyed by the chip grooves, should not be too large, as this reduces the effective wing area.

The chip grooves can be straight, oblique, arrow-shaped or else in the form of another contour (for example fan-shaped). The shape of the chip grooves directly influences the discharge behavior of the dirt particles in the sliding guide:

In the case of chip grooves with a straight arrangement, the contaminants are indeed displaced from the direct action region of the sliding guide into the grooves, but the straight arrangement does not convey the impurities laterally out of the guide.

Chip grooves with oblique, arrow-shaped or contoured (eg fan-shaped) arrangement promote a removal of the impurities to the outside.

The design-related mounting holes on sliding elements can take over by a corresponding geometric design a similar function as the special chip grooves. Of crucial importance here is the expression of the radius between the sliding surface and the lateral surface of the mounting hole. This radius is kept very small - e.g. R 0.2 mm - to have a wiping effect.

In turn, out of the mounting holes further, special chip grooves can be led to the outside. These then take over the Abstreiffunktion on the entire width of the sliding surface.

The Abführcharakteristik from the mounting holes is limited in relation to the special chip grooves by the circular contour.

The shape of the chip grooves is derived by the shape of the contaminants.

The depth of the chip grooves must be such that the contaminants collecting in the chip groove will find sufficient space without jamming. The clearance for the impurities must also be given if the impurities move three-dimensionally due to the relative movement and the resulting dynamics. The depth of the chip grooves is for example about 1 mm.

The width of the chip grooves must also absorb the contaminants in full length, without this jammed in the chip groove. The width of the chip groove is for example between 2 mm and 5 mm.

The transition of the sliding surface into the lateral surface of the chip groove arranged perpendicular thereto is characterized by a small edge break, e.g. Radius 0.2 mm, provided. The edge break / radius must under no circumstances be made too large, because if too large a radius or too large bevel in the course of sliding the impurities between the two sliding surfaces are pulled, and thereby can cause the undesirable damage.

• – Verunreinigungen auf der Gleitfläche arbeiten sich weniger unter die Gleitplatten, die Geometrie der Gleitelemente hat eine reinigende Wirkung.
• – Verunreinigungen, die sich zwischen den Gleitelementen befinden, werden durch die spezielle Geometrie der Gleitelemente nach außen befördert, die Gleitebene ist somit selbstreinigend.

The geometry of the sliding elements supports the following behavior:

• - Impurities on the sliding surface work less under the sliding plates, the geometry of the sliding elements has a cleaning effect.
• - Impurities, which are located between the sliding elements are conveyed by the special geometry of the sliding elements to the outside, the sliding plane is thus self-cleaning.

According to the invention, it has also been found that this succeeds when a coating is used for this, which is additionally applied to the hardened base surfaces. As a coating for this purpose, the physical vapor deposition or physical vapor deposition (PVD Physical Vapor Deposition) is suitable. These methods are known per se and differ in thermal evaporation, electron beam evaporation, laser beam evaporation, arc evaporation, molecular beam epitaxy, sputtering, ion beam assisted deposition, ion plating and ICB technique.

It is essential that the applied layers allow high hardness and stability, so that usually metals are vaporized and converted with reactive gases into oxides, nitrides or carbides and incorporated into the surface.

Although in this case only very thin layers are produced, it has been found that standardized stand layers shift the wear back to the sacrificial wear layer according to this method.

The invention will be explained by way of example with reference to a drawing. It shows:

1 : a wedge drive in a disassembled representation with the sliding elements on the stand and the sacrificial side (sacrificial side removable);

2 a further embodiment of the wedge slide according to claim 1 with sacrificial and stand-mounted removable sliding elements;

3 a first embodiment of a sliding strip with grooves for a dirt removal;

4 a further embodiment of the sliding strip;

5 a further embodiment of a wide inventively designed Gleitleiste with Schmutzabführnuten;

6 a further embodiment of a wide slide strip designed according to the invention;

7 : an inventively designed slide strip in a longitudinal section;

8th : an enlarged detail of the sliding strip after 7 ;

9 : the slide bar after 7 in a plan view;

10 : a detail enlargement according to the line BB after 9 ,

A slider 1 or a slider assembly 1 consists of a slide bed 2 , a slide member slidably mounted thereon and suspended in the case shown 3 and the driver 4 ,

The slider part 3 is from the driver 4 withdrawable, with the driver 4 Usually in a first (in the case shown the lower) mold half is arranged while the slider part 3 over the slide bed 2 is arranged on a corresponding second mold half (not shown).

If the two halves of the tool are moved towards each other, the slider part will hit 3 and the driver 4 with sliding surfaces 5 . 6 on each other and the driver 4 moves the slide part according to the inclined plane 7 ,

Between the slide bed 2 and the slider part 3 are also sliding surfaces 8th . 9 provided, wherein the sliding surfaces 8th . 9 from the spatial orientation also an inclined plane 10 form which of the inclined plane 7 opposite is arranged inclined in such opposite directions that the two inclined planes 7 . 10 correspond to each other such that the slide member is moved when moving the two mold halves of the slide bed on the one hand and drivers on the other hand in a desired direction.

For completeness, it should be noted that between slide bed 2 and slider part 3 Usually a spring, for example a gas spring, is arranged, which conveys the slider part after lifting the driver back to the starting position.

The sliding surfaces 5 . 6 ; 8th . 9 are here as stationary sliding surfaces 6 . 8th and sacrificial sliding surfaces 5 . 9 educated.

The sliding surfaces 6 . 8th are arranged according to the intended inclined plane and thereby usually worked out by machining from the casting and polished and surface hardened by suitable methods. The usual Rockwell hardnesses for such surfaces are from 56 HRC to 60 HRC.

The victim sliding surfaces 5 . 9 can not be realized in the cast steel material of the slide, and it is also not desirable sacrificial sliding surfaces in the component directly to the wear limit the entire component would have to be replaced. Therefore, such sacrificial sliding surfaces become 5 . 9 formed as plates.

The victim sliding surfaces 5 . 9 are formed as bronze plates. Such bronze plates may have holes to improve the sliding behavior, which are filled with inserts of graphite impregnated with oil, so that during the sliding oil is discharged from the holes and serves as a lubricant between the standing and Opfergleitfläche.

As an alternative to the bronze plates, plates made of oil-impregnated sintered material can be used. Such sintered plates consist of a steel carrier plate with an iron-based sintered layer as a sliding layer. The porous surface of the sintered layer is impregnated to improve the sliding behavior with oil, which exits during operation of the sintered layer and serves as a lubricant between the static and Opfergleitfläche.

According to the invention, on a tool-side surface, ie a surface which is directed towards the interior of a forming tool, into a sliding surface 5 . 9 as close as possible to a tool-side edge at least one chip groove 15 or flute 15 arranged. In particular, the chip groove 15 or flute 15 still in front of one of the edges 14 adjacent attachment opening 16 be arranged.

The flute 15 or chip groove 15 can be transverse to the longitudinal axis 17 inclined to the longitudinal axis 17 (For example, inclined by 60 °) or arrow-like from the longitudinal axis be formed on both sides inclined. In addition, in addition to the first, the edge 14 adjacent chip groove 15 more chip grooves 18 be arranged in comparable or other geometric embodiment.

In a further advantageous embodiment, the front side of the moving sliding element or the front edge 14 of the moving sliding element with a radius <0.2 mm to the sliding side surface formed out. Due to the lack of the usual starting chamfer or the lack of the usual large standard radius of a Gleitelementkante the ingress of contaminants is difficult or prevented.

Optionally, the front edge 14 of the sliding element 5 . 9 wedge-shaped or with bevels 19 be formed.

This chamfer 19 the Gleitelementkante 14 additionally causes a displacement the dirt particles to the outside. The in the course of the sliding element 5 . 9 arranged chip grooves 15 . 18 can ( 4 ), for example, in the screw hole 16 open, causing the screw hole 16 is formed in addition to catching dirt, or in the screw hole 16 excessively accumulated contaminants are discharged to the outside.

In the arrangement of the sliding elements different movement profiles are distinguished.

In a first embodiment, the moving body does not lift off during operation due to the system, so that the sliding guide is moved only to the extent of the system stroke (eg with lower part slides). The sliding guide is thereby partially exposed. In such an embodiment, an arrangement of the chip grooves only in the front region of the sliding element, at most in the extension of the stroke length meaningful and necessary, so that, for example, three chip grooves ( 3 . 4 ) to be ordered.

In a further embodiment of sliders, the moving body lifts systemically during operation, whereby the slide is temporarily completely exposed. In this case, it is advantageous to provide chip grooves over the entire extent of the sliding element, since dirt can also get over this over the entire arrangement or expansion of the sliding element. The amount of chip grooves depends on the length of the system stroke and the length of the sliding element.

In particular, in a motion profile in which the moving parts are not lifted apart, the distance of the chip grooves depends on the length of the system stroke. The first chip groove 15 is located approximately at 1/5 to 1/4 of the system hub. It takes over the function of the first post-cleaning, in the event that dirt particles despite the wiping edge 14 , or the small radius at the wiper edge 14 , get between the sliding guide. On about 2/3 to 3/4, and in about the length of the system hub can more flutes 18 or chip grooves 18 to be ordered. They serve as further purification stages for very small dirt particles that could not be removed by the scraping edge and the first chip groove. As already stated, one of the chip grooves 15 . 18 also with a hole 16 or a screw hole 16 be connected.

In a movement profile in which the sliding parts are lifted from each other, as already stated contamination of the sliding surface on the entire guide length is possible. Accordingly, the controlled removal of impurities must be ensured over the entire length of the sliding guide. The chip grooves 15 . 18 are distributed over the entire length of the slider in a uniform or uneven distance. It has been found that a distance of the chip grooves 15 . 18 makes sense with about 3/4 of the sliding stroke.

For very wide sliding elements or sliding surfaces may have a plurality of straight or angled chip grooves 18 be present, with the chip grooves 18 additionally from along the longitudinal axis 17 extending longitudinal grooves 20 can be interrupted. This allows a profiling similar to a car tire with, for example, three rows depending on the width of the sliding plate 21 of sliding blocks 22 done, with the sliding blocks 22 from the flutes 18 or chip grooves 18 are separated from each other.

Because of the longitudinal grooves 20 and the chip grooves 18 or grooves 18 the total sliding surface is effectively less, the number of grooves should not be too large, or in proportion to the total area, which is sufficient bearing capacity of the sliding surfaces or Gleitblöcke 22 causes.

The chip grooves 15 . 18 can be straight, oblique, arrow-shaped or in the form of other contours (eg fan-shaped) executed. The shape of the chip grooves 15 . 18 It has a direct influence on the discharge behavior of the dirt particles in the sliding guide. In the case of chip grooves with a straight arrangement, the contaminants are indeed displaced from the direct action region of the sliding guide into the grooves, but the straight arrangement does not convey the impurities laterally out of the guide. Chip grooves with oblique, arrow-shaped or contoured (eg fan-shaped) arrangement ( 6 ) favor a removal of the impurities to the outside. The removal can be carried out by suitable lubricants, which are applied at intervals to the sliding surfaces or from the oil-soaked graphite inserts 28 be encouraged. Alternatively, the sacrificial side can be made of sinter instead of bronze with solid inserts.

Be the screw holes 16 integrated into the chip removal, whether by outwardly facing chip grooves 15 or just by the presence of screw holes 16 , It is crucial that the radius between the sliding surface and the lateral surface of the bore 16 is kept small, for example, 0.2 mm, to develop a stripping effect.

Basically, the shape of the chip grooves 15 . 18 determined by the shape of the impurities. The depth of the chip grooves 15 . 18 must be designed in such a way that the impurities collecting in the chip groove will find sufficient space without jamming. The free space for the Impurities must also be present when the impurities move three-dimensionally due to the relative movement and the resulting dynamics. An advantageous depth of the chip grooves is for example about 1 mm.

The width of the chip grooves 15 . 18 must also be sized so that contaminants can be safely picked up in full length without jamming in the chip groove. The width of the chip groove is for example between 2 mm and 5 mm.

The transition of the sliding surface into the lateral surface of the chip groove arranged perpendicular thereto is characterized by a small edge break, e.g. Radius 0.2 mm, provided. The edge breakage or radius must under no circumstances be made too large, because if too large a radius or too large bevel in the course of the sliding movement, the impurities between the two sliding surfaces can be pulled and thus the unwanted damage can occur.

According to the invention, the stationary sliding surfaces 6 . 8th advantageously be formed with a hardness increasing beyond normal hardening process addition layer. In particular, the stationary sliding surfaces are formed by means of a PVD method with hard material layers, wherein the hard material layers are formed on the metal forming the slide assemblies, or formed thereon by means of appropriate PVD methods and / or infiltrated into the surface.

Suitable hard material layers include titanium nitride, titanium carbonitride, titanium aluminum nitride, but also chromium nitride, chromium vanadium nitride, chromium aluminum nitride and other common hard material layers.

In a further advantageous embodiment ( 2 ; the same components are provided with the same reference numerals), in particular in order to facilitate the corresponding coating, the stationary sliding surfaces as trays or plates 11 . 12 formed, which on the corresponding slide components 3 . 4 be screwed on. The floor sliding shells 11 . 12 are formed, for example, of steel, which is infiltrated or coated or both in suitable PVD processes, for example arc evaporation, with a layer of hard material.

In this embodiment, it is advantageous that in the material of the slide bed 2 , the slider part 3 and the driver 4 the choice of material or the cast steel can be designed entirely according to its essential function, namely the safe transmission of force, without the corresponding surfaces having to undergo hardening, which always also intervenes in the structure of the metal.

In addition, both surfaces of the shells 11 . 12 be coated accordingly, so that at the end of the life of a surface, the shell can be rotated and reused.

The difference in hardness of the make layer to the sacrificial layer should be greater than 2,000 HV.

The inventors have thus recognized that the hardening of the stationary sliding surfaces and in particular the hardening of the stationary sliding surfaces beyond the normal measure, in particular by the choice of other casting materials does not lead to the goal, but only a hard material coating or hard material infiltration in the casting material or on separate shells in the situation to shift the wear on the sacrificial slip layer.

LIST OF REFERENCE NUMBERS

1

Slide / slide assembly

2

slider bed

3

slide part

4

driver

5

Sliding / Opfergleitfläche

6

Sliding / Standgleitfläche

7

inclined plane

8th

Sliding / Standgleitfläche

9

Sliding / Opfergleitfläche

10

inclined plane

11

Standgleitflächenschale / plate

12

Standgleitflächenschale / plate

14

edge

15

Clamping groove / flute

16

Attaching hole / screw / bore

17

longitudinal axis

18

Clamping grooves / flutes

19

slope

20

longitudinal groove

21

Series of sliding blocks 22

22

slide blocks

28

 oil-soaked graphite inserts

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 2640318 B2 [0003]
• DE 2439217 A1 [0004]
• DE 2329324 B2 [0005]
• DE 19753549 C2 [0009]
• US 5101705 A [0010]
• EP 1197319 A1 [0011]
• DE 102008061420 B4 [0012]

Claims (18)

Tool slide designed as a wedge drive with at least two movably slidably adjoining components ( 2 . 3 ; 3 . 4 ), the components ( 2 . 3 ; 3 . 4 ) are arranged with sliding surfaces sliding against each other, wherein a sliding surface ( 6 . 8th ) as wear-resistant stationary sliding surface ( 6 . 8th ) and the corresponding sliding surface ( 5 . 9 ) as a wear-prone victim sliding surface ( 5 . 9 ) and in particular exchangeable sacrificial sliding surface ( 5 . 9 ), characterized in that in a sliding surface ( 6 . 8th ; 5 . 9 ) as close as possible to a tool-side leading edge ( 14 ) at least one chip groove ( 15 ) or chip removal groove ( 15 ) is arranged. Tool slide according to claim 1, characterized in that the chip removal groove ( 15 ) or chip groove ( 15 ) transverse to a longitudinal axis ( 17 ) of the sliding surface ( 6 . 8th ; 5 . 9 ) or inclined to the longitudinal axis ( 17 ) or arrow-like from the longitudinal axis ( 17 ) is inclined on both sides. Tool slide according to claim 1 or 2, characterized in that further chip grooves ( 18 ) in comparable or other geometric embodiment in the sliding surface ( 6 . 8th ; 5 . 9 ) are arranged. Tool slide according to one of the preceding claims, characterized in that a plurality of straight or angled chip grooves ( 15 . 18 ) are present, wherein the chip grooves ( 15 . 18 ) additionally along the longitudinal axis ( 17 ) extending longitudinal grooves ( 20 ) are interrupted. Tool slide according to one of the preceding claims, characterized in that by the chip grooves ( 15 . 18 ) and the longitudinal grooves ( 20 ) the sliding surface has a profile similar to a tire profile with a plurality of rows ( 21 ) of sliding blocks ( 22 ) formed by the chip grooves ( 15 . 18 ) and longitudinal grooves ( 20 ). Tool slide according to one of the preceding claims, characterized in that the chip grooves ( 15 . 18 ) are straight, oblique, arrow-shaped or in the form of other contours, such as fan-shaped executed. Tool slide according to one of the preceding claims, characterized in that the chip grooves ( 15 . 18 ) have a depth of 0.5 mm to 2.5 mm with a width of 1.5 mm to 7.5 mm. Tool slide according to one of the preceding claims, characterized in that the transition of the sliding surface into the lateral surfaces of the chip grooves arranged perpendicularly therein ( 15 . 18 ) is formed with a small edge break, in particular with a radius <0.2 mm. Tool slide according to one of the preceding claims, characterized in that the front edge ( 14 ) of the sliding element ( 6 . 8th ; 5 . 9 ) wedge-shaped or beveled ( 19 ) is formed and / or the leading edge ( 14 ) of the sliding element ( 6 . 8th ; 5 . 9 ) is formed with a radius <0.2 mm to the sliding side surface. Tool slide according to one of the preceding claims, characterized in that the stationary sliding surface is a hard material-infiltrated or a hard material-coated sliding surface. Tool slide according to claim 10, characterized in that the stationary sliding surface ( 6 . 8th ) is infiltrated and / or coated by PVD method. Tool slide according to claim 10 or 11, characterized in that the sacrificial sliding surface ( 5 . 9 ) is formed of a bronze or a graphite lubrication having bronze or sintered material. Tool slide according to one of claims 10 to 12, characterized in that the sacrificial sliding surfaces ( 5 . 9 ) are formed as bronze plates or sintered plates. Tool slide according to one of claims 10 to 13, characterized in that the stationary sliding surfaces ( 6 . 8th ) are formed directly from the material forming the slider body or as infiltrated or coated shells or plates ( 11 . 12 ) are formed. Method for producing a tool slide, in particular a tool slide, which is designed as a wedge drive, and between the parts ( 2 . 3 . 4 ) of the slide assembly sliding surfaces ( 5 . 6 . 8th . 9 . 11 . 12 ), wherein in each case one of the corresponding sliding surfaces as a stationary sliding surface ( 6 . 8th ) is formed and one of the corresponding sliding surfaces as Opfergleitfläche ( 5 . 9 ), in particular exchangeable sacrificial sliding surface ( 5 . 9 ), is formed, characterized in that the stationary sliding surfaces ( 6 . 8th ) are directly formed on the part of the slide and are infiltrated or coated with a layer of hard material, or the stationary sliding surfaces as shells or plates ( 11 . 12 ) and the trays or plates ( 11 . 12 ) Hardstoffinfiltriert or hard material coated. A method according to claim 15, characterized in that the hard material infiltration or hard coating is carried out by PVD method. Method according to one of claims 15 or 16, characterized in that the coating or infiltration layer is chosen so that the hardness difference between the stationary sliding layer and the sacrificial sliding layer is at least 2,000 HV. Method according to one of claims 15 to 17, characterized in that the hard material infiltration only the hard material layers of nitrides and / or carbonitrides and / or oxides of one or more metals, in particular of titanium nitride and / or titanium carbonitride and / or titanium aluminum nitride and / or chromium nitride and / or chrome vanadium nitride and / or chromium aluminum nitride.

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