FR2930903A1 - PUNCHING MACHINE HAVING TWO ROWS OF TOOLS - Google Patents

Abstract

The invention relates to a machine (1) for punching a product (2), such as a cabinet door or said electrical box.According to the invention, said machine comprises a row of tools (3, 4 ) of punches type and a row of die-type tools, each punch-type tool being adapted to cooperate with a die-type tool to form a punching assembly, the two rows of tools being spaced apart from one another. another to delimit between them a path (6) of circulation of the product to be punched, each tool of a row being mounted only movable in translation in a direction (Z) said punching. The machine also comprises means for moving the product along said path in two directions (X, Y) substantially orthogonal to the punching direction, and actuating means (5A, 5B) of the punching assemblies.

Description

The present invention relates generally to the punching of products. The invention more particularly relates to a machine for punching a product, such as a cabinet door or cabinet called electrical.

An electrical box is a box that houses electrical elements intended to be wired. This cabinet has a bottom wall, side walls and a door on the front of the box. The door is punched to obtain orifices for housing electrical accessories such as pushbuttons, LEDs, LEDs and ammeters. The orifices made by punching can be circular or rectangular and of different dimensions depending on the punch / die assembly used. Electrical boxes are used for different applications, such as power supply applications or industrial process control applications.

So far, electric box door punching is done manually by an operator. The latter traces on the door the location of each orifice and carries out the corresponding orifice with the aid of a manual punching machine. The punching of a complete door causes a frequent change in the punch and die assembly depending on the dimensions and shapes of the holes to be made. Thus, manual punching limits the rate of completion of the doors. In addition, the layout of the positions of the orifices to be made on the door by the operator lacks precision. The steps of handling the doors and punching are also painful.

The object of the present invention is to allow an increase in the punching rate of the products, in particular by avoiding having to manually change the tools of the punch and die assembly in order to punch different shapes and / or dimensions. .

Another object of the invention is to reduce the difficulty of door handling operations and punching operations.

Another object of the invention is to increase the accuracy and reliability of the punching operations.

Another object of the invention is to allow automation of punching operations.

Another object of the invention is to limit the wear of a punch and die assembly. For this purpose, the invention proposes a machine for punching a product, such as a cabinet door or said electrical box, characterized in that said machine comprises: at least two rows of tools arranged in one of the 15 rows of tools being formed of punch-type tools, preferably of different shapes and / or dimensions from one punch to another, and the other row being formed of die-type tools, each punch-type tool being adapted to cooperate with a die-type tool to form a punching assembly, the two rows of tools being spaced from each other to delimit between they a circulation path of the product to be punched, each tool of a row being mounted mobile only in translation in a so-called punching direction, to be moved closer to or away from the corresponding tool of the other row, - moving means of the product along said ch emin, in two directions substantially orthogonal to the punching direction, - actuating means punching assemblies, able to move the tools of a punching assembly between a position, said inactive, in which said tools are spaced l one of the other, and a so-called active position, in which said tools are brought closer to one another so as to punch said product.

Such a design of the machine makes it possible to provide, among the rows of punch-type and milling-type tools, two identical sets of punch and die, which makes it possible to alternate the use of these two identical sets in order to limit the wear of the corresponding tools.

With the machine according to the invention, when the two rows of tools form punch and die assemblies of different dimensions and / or shapes, it is possible to make holes by punching of different dimensions and / or shapes. without having to intervene during the punching operation to manually change the tools of the punching sets used. Erg effect, the machine according to the invention is equipped for each orifice to achieve at least one punching assembly to obtain the shape and size of the orifice to achieve.

In addition, the presence of means for moving the door allows to leave each row of tools fixed, except of course the mobility of movement 15 of each of the tools in the direction of punching. Indeed, thanks to the row arrangement of the tools, it is sufficient to move the door, relative to the frame of the machine, to position it between the tools of a punch assembly corresponding to the shape and / or dimension of the orifice to be made. Once the orifice is made, the door can be moved between the tools 20 of another punching assembly to make an orifice of shape and / or of different size. The row arrangement of the tools makes it possible to mount the tools only in the direction of punching, the two directions of movement of the product making it possible to have, on the one hand, the product between the tools of the punching assembly making it possible to produce a punch. 25 of the desired shape and size and, on the other hand, to correctly position the product with respect to this punching assembly to obtain the desired position of the orifice relative to the product.

Thus, according to the machine according to the invention, it is the product which is moved relative to the frame of the machine, the punching tools remaining fixed relative to the frame in the directions other than the punching direction. Such a design makes it possible to obtain a good punching accuracy. Indeed, in the opposite case, which is not that of the invention, where the rows of tools are moved relative to the frame of the machine, the positioning of said tools against the product is very imprecise in fact of the important inertia of the rows of tools.

In addition, the tools need only to be moved according to their punching direction, simple actuating means are sufficient to move said tools, which simplifies the design of the machine and reduces its manufacturing cost.

According to an advantageous characteristic of the invention, the actuating means of the punching assemblies are formed of a first and a second actuator, such as cylinders, the first actuating member being common to the actuator. set of punch-type tools, and the second actuating member being common to all matrix-type tools. Preferably, the first actuator is movably mounted along the row of punch-type tools and the second actuator is movably mounted along the array of die-type tools.

For a punching assembly corresponding to the shapes and / or dimensions of the orifice to be made, each actuating member is moved along said row of tools facing the corresponding tool of the punching assembly. The mobility of movement of each actuating member along a row of tools allows the use of a single actuator per row of tools. Indeed, a single punching assembly being actuated at a time, a single actuator per row of tools is sufficient to perform the punching operations.

According to an advantageous characteristic of the invention, each actuating member is equipped with a jaw and each tool of a punching assembly comprises a body of generally cylindrical shape, one end of which bears the punch or the die and whose end opposite is provided with a handle adapted to cooperate with said jaw of the corresponding actuating member, so that when said actuating member 5 is moved along the row of tools facing a tool to actuate, said jaw engages with the handle to allow to return said tool in the inactive position once the punching operation performed. The cooperation of the jaw of each actuating member with the handle of a tool of one of the punching assemblies makes it possible to move the tool easily into the active position and to return it to the inactive position.

According to an advantageous characteristic of the invention, the means for moving the product comprise means for supporting said product, a device for conveying said product support means in a direction parallel to the rows of tools, said means for supporting the product. being slidably movable relative to said conveying means 15 in a direction orthogonal to the punching and moving directions of the conveying device. Preferably, the conveying means and the support means are respectively formed by a main frame and an auxiliary frame, substantially parallel to one another and inclined relative to the horizontal plane, the amounts of the auxiliary frame being slidably mounted on guide rails integral with the main frame and oriented parallel to the uprights of said main frame, and the cross members of the main frame being slidably mounted on guide rails extending in a direction parallel to the rows of tools.

Such a design of the product moving means makes it possible to move said product easily along the rows of tools and in an orthogonal direction to the tool rows and to the punching direction.

According to an advantageous characteristic of the invention, the support means 30 of said product have a support plane, inclined with respect to the vertical, of an angle less than 45 °, preferably between 10 ° and 15 ° to allow the product to rest on said support plane.

The inclination of the support means relative to the vertical allows the product to rest gravitationally on the support plane of the support means. It is thus not necessary to provide additional means preventing said product from falling. The inclination of the support means by an angle of between 10 ° and 15 ° relative to the vertical allows the product to rest on the support plane while allowing a design of the punching tools so that their punching direction is slightly inclined relative to the horizontal, that is to say inclined at an angle between 10 ° and 15 °. The effect of gravity on the tool when moving in its direction Io punching is relatively low, compared to an embodiment for which the punching direction would be vertical. The design of the machine should then be adapted to take into account the gravity displacement of the tools, in particular by means of return means and holding the tools in the inactive position to counter the effect of gravity. According to an advantageous characteristic of the invention, the means for actuating the tools are associated with thrust means, called stripping means, capable of exerting a thrust force on the product in the direction of movement of the tool. punch type in the active position, to allow, after a punching operation, to easily remove said tool from the product.

According to an advantageous characteristic of the invention, the means for moving the product and the means for actuating the punching assemblies are controlled in displacement by control means, such as electric motors, controlled by a control unit comprising instruction storage means corresponding to the positions, shapes and / or dimensions of the punching to be performed and the means for executing said instructions. With the control unit of the punching machine according to the invention, it is possible to store and then execute a series of instructions corresponding to the shapes and / or the dimensions of the punch holes to be made, and to the positions of said orifices relative to the product. The control means of the product displacement means and the control means of the actuating means of the punching assemblies are then controlled according to the instructions. The control unit thus makes it possible to automatically perform the punching operations. With such automation of the machine, the characteristics of the punch holes are reproducible reliably from one product to another. According to an advantageous characteristic of the invention, the product displacement means are operatively servocontrolled to the positions of the punchings to be made on the product relative to said product and to the positions of the punching assemblies to which the shapes and / or dimensions of the products correspond. punching to be performed on the product, and the actuating means of the punching assemblies are slaved in displacement at the positions of punching assemblies which correspond to the shapes and / or dimensions of punching to be performed on the product.

The product displacement means and the actuating means of the punching assemblies thus cooperate to obtain the desired shapes, dimensions and positions of the punching orifices relative to the product. Indeed, the production of a punching orifice requires, on the one hand, the selection of a punching assembly, corresponding to the shape and / or the size of the orifice to be made, by moving the punching means. actuation opposite the tools of said assembly, and, secondly, the positioning of the product opposite said tools according to the desired position of the orifice to be made relative to the product.

The invention will be better understood on reading the following description of exemplary embodiments, with reference to the appended drawings, in which: FIG. 1 is a perspective view of the two rows of tools of the machine according to the invention; according to a first angle of view; - Figure 1A is a perspective view of the two rows of tools of Figure 1 according to a second angle of view; - Figure 2 is a side view of the two rows of tools of the machine according to the invention in the active position of said tools; - Figure 3 is a side view of the two rows of tools of Figure 2 in the inactive position of said tools; - Figure 4 is a front view of the machine in which are visible the product displacement means and a row of tools; FIG. 4A is a side view of the machine of FIG. 4 in which the product displacement means and the tool rows are visible; - Figure 5 is a perspective view of the main frame and the auxiliary frame forming the product displacement means; Figure 6 is a perspective view of the main frame of Figure 5 equipped with a motorized endless pulley and belt system for controlling the displacement of the auxiliary frame relative to the main frame; - Figure 7 is a perspective view of the auxiliary frame of Figure 6 equipped with clamping means of the product on said auxiliary frame.

In Figure 1, there is shown a machine 1 for punching a product 2. Said product is here an electrical cabinet door. The punch box door is formed of a metal or polyester plate.

Said machine comprises at least two rows of tools 3, 4 arranged facing one another. One of the rows of tools 3, 4 is formed of tools 3 of the punch type, and the other row is formed of tools 4 of the matrix type. The tools 3 or respectively of a row of tools are mounted in parallel arrangement. Each tool 3 of punch type is adapted to cooperate with a tool 4 of the matrix type to form a punching assembly.

The two rows of tools 3, 4 are spaced from each other to delimit between them a path 6 for circulation of the product 2 to be punched. Each tool 3, 4 of a row is mounted to move only in translation in a direction Z called punching, to be moved closer to or away from the tool 3, 4 corresponding to the other row. The tools of each set are movable to a position in which they come into contact with one another with the interposition of the product to be punched.

The punches are preferably of shapes and / or dimensions distinct from one punch to another. Thus, in the example illustrated in the figures, each punching assembly makes it possible to punch differently in shape and / or size with respect to another punching assembly.

to On the one hand there are cylindrical punches for the installation of components such as LEDs, LEDs or buttons and, on the other hand, rectangular shaped punches for the display and measuring device implantation. such as ammeters. The dies used to cooperate with the punches are also of different shapes. There are provided matrices of outer and inner square shape, and matrices of outer and inner circular shape.

The rows of tools 3, 4 are each carried by a magazine formed of a rectangular plate 23A, 23B to which several tool holders 20 are fastened, which are in the form of cylindrical tubes into which the tools are introduced and can slide. 3, 4 punching. Both magazines are mounted fixed relative to the frame of the machine.

As illustrated in FIGS. 4 and 4A, the machine also comprises means 7 for moving product 2 along said path 6 in two directions X, Y substantially orthogonal to the direction Z of punching.

As detailed below, the displacement of the product 2 is made according to the positions of the punchings to be made on the product and the positions of the punching sets to which correspond the shapes and / or dimensions of the punching to be performed on the product. The use of punching tools of different shapes and / or sizes makes it possible, with the same machine, to produce a plurality of punching orifices of different sizes and shapes by displacing, according to the desired positions of the orifices to be produced, the product along the road. Such a machine thus makes it possible to punch products at a high rate and offers the possibility of producing punching orifices of different shapes and variable dimensions in a simple and rapid manner.

The machine also comprises actuating means 5A, 5B punching assemblies able to move the tools 3, 4 of a punching assembly between a position, said inactive PI, wherein said tools 3, 4 are spaced apart. on the other hand, and a so-called active position PA, in which said tools are brought closer to one another so as to punch said product. During a punching operation, the actuation or not of the tools of a punching assembly is a function of the shapes and / or dimensions of punching to achieve.

In the example illustrated in the figures, the actuating means 5A, 5B of the punching assemblies are formed of a first and a second actuating member 5A, 5B, here cylinders. The first actuating member 5A is common to all the tools 3 of the punch type, and the second actuating member 5B is common to all the tools 4 of the matrix type. As illustrated in FIGS. 1 to 3, the first actuating member 5A is movably mounted along the tool row 3 of the punch type and the second actuating member 5B is movably mounted along the row of tools 4 matrix type.

Each actuating member 5A, 5E3 is carried by a plate 28A, 28B provided with guide means along rails 22A, 22B to allow the displacement of said actuating member 5A, 5B parallel to the corresponding row of tools, c that is to say along the axis X orthogonal to the axis Z of punching, opposite the tool, punch or matrix, to operate. The displacement of each plate 28A, 28B, and therefore of the actuating member 5A, 5B that it carries, is achieved by a system (not shown) formed of pulleys and a belt driven by a geared motor.

As illustrated in FIGS. 2 and 3, each actuating member 5A, 5B is equipped with a jaw 20A, 20B and each tool 3, 4 of a punching assembly comprises a body 3B, 4B of generally cylindrical shape, one end of which carries the punch 3C or 4C matrix and whose opposite end is provided with a handle 3A, 4A adapted to cooperate with said jaw 20A, 20B of the actuating member 5A, 5B corresponding. In the examples shown, said handle is formed by a flange of the body 3B, 4B.

Thus, when said actuating member 5A, 5B is moved along the row of tools facing a tool 3, 4 to actuate, said jaw 20A, 20B engages with the handle 3A, 4A. The jaws of the jaw form axial abutments in the punching direction to allow to return said tool 3, 4 in the inactive position once the punching operation performed.

As illustrated in FIGS. 1 to 3, the actuating means 5A, 5B of the tools are associated with pushing means, called stripping means, capable of exerting a thrust force on the product, in the direction of movement of the tool 3 of the punch type in the active position, to allow, after a punching operation, to easily remove said tool 3 from the product 2. The stripping means associated with each punch-type tool are formed by a plate 19A secured to a rod 19B slidably mounted relative to the punch type tool. Cylinders 19 and 5A are asynchronous. The plate is pushed against the product by displacement of the rod 19B with the aid of a jack 19. Said cylinder 19 is itself carried by the plate 28A, which makes it integral in displacement of the cylinder 5A forming a body. actuation of the punch type tool. The purpose of the stripping is to prevent tearing of the material in the vicinity of the orifice made during the return of the punch after punching. A spring (not shown) is provided to recall each plate 19A stripping in the deviated position of the product. As illustrated in Figure 4, a hydraulic unit 21 is provided for the supply of the cylinders 5A, 5B and 19.

The displacement means 7 of the product 2 comprise support means 8 of said product and a conveying device 9 of said support means 8 of the product in a direction X parallel to the rows of tools 3, 4. Said support means 8 of the product are slidably mounted relative to said conveying means 9 in a direction Y orthogonal to the directions Z, X for punching and moving the conveying device 9.

As illustrated in FIGS. 4 to 7, the conveying means 9 and the support means 8 are respectively formed by a main frame 10 and an auxiliary frame 14, substantially parallel to one another and inclined with respect to the other. horizontal plane X, H. The uprights 14B of the auxiliary frame 14 are equipped with carriages 15 slidably mounted on guide rails 16 integral with the main frame 10 and oriented parallel to the uprights 10B of said main frame 10. As illustrated in FIG. the displacement of the auxiliary frame 14 relative to the main frame 10 is achieved using an assembly formed of a geared motor 17A, pulleys and belts 17B. The belts 17B are connected to the auxiliary frame by connecting plates 15A (Figure 7).

The X-axis guidance permits the horizontal displacement of the main frame 10 and the auxiliary frame 14 carried by said main frame. The main frame 10 is slidably mounted in its lower part and in its upper part on two rails 12 (FIGS. 4 and 4A). To do this, the crosspieces 10A of the main frame are slidably mounted on said guide rails 12 via guiding members such as carriages. The frame is driven in displacement along said rails 12 by a system of pulleys and a motorized endless belt, said belt being connected to the carriages equipping the lower rail 10A. Movement of the product along the Y direction is accomplished by sliding the auxiliary frame 14 relative to the main frame 30 as explained above.

The support means 8 of said product have a support plane, inclined with respect to the vertical V, by an angle of less than 45 °, preferably between 13 ° and 15 ° to allow the product to rest on said plane of support. In the example illustrated in the figures, said support plane is formed by bottom stops 25, arranged at the bottom face of the frame 14, on which the product rests. Since the product is a substantially planar cabinet door, the wall of the product to be punched extends in a plane parallel to the support plane, that is to say the plane formed by the X and Y directions inclined at an angle. preferably between 10 ° and 15 ° relative to the vertical V. To maintain a punching direction Z substantially orthogonal to the wall of the product to be pierced, the tools 3, 4 are inclined relative to the horizontal H of such so that the sliding direction of said tools, which corresponds to the punching direction, forms with the horizontal H an angle of value corresponding to the value of the angle formed between the support plane and the vertical V, that is that is to say an angle less than 45 °, preferably between 10 and 15 °.

As illustrated in FIG. 7, the auxiliary frame 14 is equipped with means for clamping the product. Said clamping means are formed of clamping members 24 carried by a bar 27, oriented parallel to the upper cross member 14A of the frame 14, and movably mounted by means of guiding means 26, such as rollers, along profiles oriented parallel to the uprights 14B of the frame 14 to form guide rails of the bar 27 clamping. The clamping members 24 are called "grasshoppers". A "grasshopper" is a device that allows, by simply tilting a lever, to ensure the tightening of the product.

Clamping of the product on the auxiliary frame 14 is achieved by first positioning the product on the support plane formed by the bottom stops 25. The clamping bar 27 is then manually moved by the operator along said profiles. forming guide rails so as to bring the clamping members 24 closer to the upper edge of the product to be punched. The clamping bar 27 is locked in position relative to the frame 14 by means of indexing fingers. The operator then activates the grasshoppers that exert a major support effort on the upper side of the product.

As illustrated in FIG. 4, the loading of the product into the support means 8 is carried out outside the space delimited between the rows of tools.

The displacement means 7 of the product and the actuating means 5A, 5B of the punching assemblies are controlled in displacement by means of control means, such as electric motors, controlled by a control unit 18.

The control unit 18 comprises instruction storage means corresponding, on the one hand, to the positions of the orifices to be made relative to the product and, on the other hand, to the shapes and / or the dimensions of the punchings to be produced. Said unit also comprises means for executing said instructions.

Said instructions comprise instructions for moving the moving means 7 and instructions for moving the actuating means 5A, 5B of the punching assemblies. The displacement instructions of the actuating means 5A, 5B are generated in such a way that said actuating means 5A, 5B are slaved in displacement at the positions of the punching assemblies to which the shapes and / or the dimensions of the punchings to be produced correspond. on the product. The displacement instructions of the displacement means 7 of the product 2 are generated in such a way that the displacement means 7 of the product 2 are slaved during operation, on the one hand, at the positions of the punchings to be made on the product relative to said product and, on the other hand, at the positions 30 of said punching assemblies to which correspond the shapes and / or the dimensions of the punchings to be made on the product. Preferably, said instructions are generated by a computer program using a graphical interface. For this purpose, there is provided a computer, on which said program is installed, able to communicate with said control unit. Said control unit is preferably formed by a programmable industrial controller (PLC). The computer can communicate with said PLC by a serial type of link or by an Ethernet type connection, LAN or the Internet.

The coordinates in the XYZ space of the tool rows, as well as the shapes and dimensions of said tools, are stored in the computer, as well as a library of door formats, these data being accessible to the program. The operator loads, from the door format library, a virtual template corresponding to the punched door. The program displays on the screen said virtual template and, using a registration grid, the operator defines the positions, shapes and dimensions of the punching 15 to be performed with respect to this template. The program then generates, from the desired positions, punching orifices relative to the door and shapes and / or dimensions of the orifices to be produced, the corresponding instructions for moving, on the one hand, the door 2 and, on the other hand, actuators 5A, 5B of the tools 3, 4. The instructions are then transmitted to the control unit.

Thus, for each orifice to be made, the instructions executed by the control unit control, on the one hand, the displacement of the actuating members 5A, 5B to the position of the tools of the punch assembly corresponding to the shape and / or the size of the punching to be performed, and secondly, control the movement of the door between the tools of said punching assembly in a position, in the XY plane, corresponding to the position of the desired orifice relative to the outline of the door. When the actuating members are positioned opposite said tools of the punching assembly and when the product is positioned as desired with respect to said tools, the actuating members are actuated to move towards one another. punch-type tool and die-type tool of said punch assembly. Preferably, the control means of the means

16 of the punching assemblies are controlled so as to simultaneously actuate the tools 3, 4 of the punch type and matrix type of a punching assembly. Simultaneous operation of the punch and die tools of a punching assembly enables the punching operation to be performed quickly and reliably. The present invention is not limited to the embodiments described and shown, but the skilled person will be able to make any variant within his mind.

Claims (10)

REVENDICATIONS1. Machine (1) for punching a product (2), such as a cabinet door or said electrical box, characterized in that said machine comprises: - at least two rows of tools (3, 4) arranged facing one another, one of the rows of tools (3, 4) being formed of tools (3) of the punch type, preferably of shapes and / or dimensions distinct from a punch to another, and the other row being formed of die-like tools (4), each punch-like tool (3) being adapted to cooperate with a die-like tool (4) to form a punching assembly, the two rows of tools (3, 4) being spaced from each other to delimit between them a path (6) for the circulation of the product (2) to punch, each tool (3, 4) of a row being mounted to move only in translation in a so-called punching direction (Z), to be moved closer to or away from the corresponding tool (3, 4) in the other row, - moving means ent (7) of the product (2) along said path (6), in two directions (X, Y) substantially orthogonal to the direction (Z) of punching, - actuating means (5A, 5B) of the sets of punching, able to move the tools (3, 4) of a punching assembly between a position, said inactive (PI), wherein said tools (3, 4) are spaced from each other, and a said active position (PA), in which said tools are brought closer to one another so as to punch said product. 2. Punching machine (1) according to claim 1, characterized in that the actuating means (5A, 5B) of the punching assemblies are formed of a first and a second actuating member (5A, 5B), such as cylinders, the first actuating member (5A) being common to all of the punch-type tools (3), and the second actuating member (5B) being common to all the tools (4) matrix type. 30 Punching machine (1) according to claim 2, characterized in that the first actuating member (5A) is movably mounted along the punch-type line of tools (3) and the second actuating member. (5B) is mounted 17mobile along the row of tools (4) of matrix type. Punching machine (1) according to claim 3, characterized in that each actuating member (5A, 5B) is provided with a jaw (20A, 20B) and each tool (3, 4) of a set punching device comprises a body (3B, 4B) of generally cylindrical shape, one end of which carries the punch (3C) or the die (4C) and whose opposite end is provided with a handle (3A, 4A) adapted to cooperate with said jaw (20A, 20B) of the corresponding actuating member (5A, 5B), such that when said actuating member (5A, 5B) is moved along the row of tools (3 , 4) opposite a tool (3, 4) to be actuated, said jaw (20A, 20B) engages with the handle (3A, 4A) to allow said tool (3, 4) to be returned to the inactive position a times the punching operation performed. 15 Punching machine (1) according to one of the preceding claims, characterized in that the displacement means (7) of the product (2) comprise support means (8) for said product, a conveying device (9). said support means (8) of the product in a direction (X) parallel to the rows of tools (3, 4), said support means (8) of the product being slidably movable relative to said conveying means (9); ) in a direction (Y) orthogonal to the directions (Z, X) for punching and moving the conveying device (9). Punching machine (1) according to claim 5, characterized in that the conveying means (9) and the supporting means (8) are respectively formed by a main frame (10) and an auxiliary frame (14). , substantially parallel to one another and inclined relative to the horizontal plane (X, H), the uprights (14B) of the auxiliary frame (14) being slidably mounted on rails (16) integral with the frame guide main (10) and parallel to the uprights (10B) of said main frame (10), and the cross-members (10A) of the main frame being slidably mounted on guide rails (12) extending in a parallel direction (X) to the rows of tools (3, 4). 7. punching machine (1) according to one of claims 5 and 6, characterized in that the support means (8) of said product have a support plane (*), inclined relative to the vertical (Y), an angle less than 45 °, preferably between 10 ° and 15 ° to allow the product to rest on said support plane. 8. punching machine (1) according to one of the preceding claims, characterized in that the actuating means (5A, 5B) of the tools are associated with thrust means (19), called stripping means, adapted to exerting a thrust force on the product in the direction of movement of the punch-type tool (3) in the active position, to allow, after a punching operation, to easily remove said tool (3) from the product (2). 9. punching machine (1) according to one of the preceding claims, characterized in that the displacement means (7) of the product and the actuating means (5A, 5B) of the punching assemblies are controlled in displacement by control means, such as electric motors, controlled by a control unit (18) comprising instruction storage means corresponding to the positions, shapes and / or dimensions of the punchings to be produced and means for executing said instructions . 10. punching machine (1) according to claim 9, characterized in that the displacement means (7) of the product (2) are slaved in operation at the punching positions to be performed on the product relative to said product and the positions of sets punching to which correspond the shapes and / or dimensions of punching to be performed on the product, and in that the actuating means (5A, 5B) punching assemblies are slaved in displacement at the positions of the punch sets to which correspond the shapes and / or dimensions of punching to be performed on the product.