Tool holder device and marking system, marking method therefor

Abstract

The invention relates to a portable tool-holder device (1) comprising a longitudinal body, a first element (3) pivoting about a first axis AA', a second element (4) mounted eccentrically on the first element such as to pivot about a second axis BB' parallel to the first axis AA', and a third element (5) mounted eccentrically on the second element such as to receive a marking tool (6), said device (1) comprising at least two motor assemblies and transmission means (7, 8) capable of actuating the first and / or second element (3, 4), the at least two motors (70, 80) being longitudinal, parallel to one another, and offset with respect to said elements (3, 4, 5). A marking system comprising such a device (1) equipped with a tool (6). A corresponding method for marking a pattern. A scarifier formed by such a device (1) equipped with a blade. A scarifier system comprising such a scarifier. A corresponding scarifying method.

Description

Description Title of the invention: tool holder device and marking system, corresponding marking method

[0001] The technical field concerns that of manual devices and systems allowing the maintenance and use of a marking tool and the methods of implementing such a device.

[0002] The invention is of particular interest in the field of support scarifiers in order to test the adhesion of a coating on a flat or uneven support in whole or in part, and in the field of methods for implementing such a scarifier.

[0003] The invention is of particular interest in the field of instruments used to carry out tests on the resistance of a coating, for example a paint, a metallic or organic layer deposited by any means, for example by electrolytic deposition, by galvanic or electrolytic deposition, by spraying with a paint gun or by plasma spraying on a support, in particular in the field of the manufacture of plastic or metallic parts.

[0004] In order to check that a coating sticks to a support, for example a metal or plastic support, it is known to carry out a test called the Scotch tape test.

[0005] A standard grid is created in a known manner according to the standard, for example ASTM D3002, ASTM D3359, or ISO 2409, using a cutter blade that cuts through the paint layer, and a standard adhesive strip is applied over it. By tearing off the adhesive strip, we check whether the paint is coming off or not by looking at the number of squares that come off the grid.

[0006] The operator to carry out the grid makes a defined number of at least one notch, or at least two notches, in particular parallel to each other, on the surface of the part to be tested, then rotates, for example, a quarter turn of the surface of the part to be tested to make a defined number of at least one other notch, or at least two notches, in particular parallel to each other and perpendicular to the first notches made or making a defined angle, for example, 25 degrees or 45 degrees.

[0007] The spacing of the parallel lines forming the grid can be standardized from 1 to 3 millimeters.

[0008] A technician carrying out this grid must therefore be precise and press firmly on the cutter blade in a regular and identical manner.

[0009] Since this tape test must be repeated throughout production, this work is repetitive and tedious, a source of musculoskeletal disorders, and requires great concentration.

[0010] It is known to use an openwork plate with several guiding lights of the blade or grid combs with several blades to facilitate tracing, but the movements remain repetitive and the formation of musculoskeletal disorders persists.

[0011] It is known to remedy this by using electric scarifying machines.

[0012] These machines come in the form of a tool placed on a table, comprising on the one hand an arm continuing into a head containing a knife, and on the other hand a base for positioning a piece to be scarified.

[0013] Electric motors allow the arm to move forward and backward, up and down, and the head to move right and left to make the knife draw parallel lines.

[0014] A motor allows the base to be pivoted through a specific angle, for example through a 90° angle, to repeat the scarification operation and thus form a grid as described previously.

[0015] These scarifying machines are heavy, bulky, and slow.

[0016] In addition, they require a preliminary operation of cutting a large piece to be scarified into a portion suitable for placement on the positioning base.

[0017] Additionally, a part or portion of a part with curved surfaces is difficult to scarify with this type of scarifying machine.

[0018] This particular problem specific to the tape test to check the adhesion of a coating on a part is found more generally when we want to make a marking on a part.

[0019] So, in addition to a grid with a blade, it may be considered to want to engrave or scratch a pattern on a piece with a metal point, a circular blade, a knife, a cutter blade or any other engraving tool.

[0020] Alternatively, it may be considered that you want to draw a pattern on a piece with a pencil or felt-tip pen or any other tool that allows you to draw a pattern.

[0021] Thus, document US20220184798A1 presents a robotic arm comprising a static base, on which a first element pivots in rotation around a first axis, with at the end of this first element a second element pivoting around a second axis parallel to the first axis, and with a tool holder mounted eccentrically on this second element, said tool holder extending parallel to the first and second axes.

[0022] This robotic arm is heavy and bulky and must be placed on a support.

[0023] It comprises, in a known manner, means for driving the first and second elements in the form of motor blocks placed at the level of said elements at the level of the axes of rotation.

[0024] Due to the length of the elements, any sudden movement is amplified and it is difficult to handle the tool precisely and repeatably.

[0025] In addition, the motors at the elements increase the offset weight of the elements relative to their respective axis, creating unbalances. It is therefore necessary to make the elements more structurally rigid or compensate for the offset weight, which increases the weight of the robotic arm and the inertia of the assembly. This makes the accurate reproduction of a small pattern difficult and uncertain during high-speed movements.

[0026] This is particularly the case for complex patterns with multiple lines such as grids.

[0027] To remedy this, it is then necessary to ensure precise assemblies of parts with a high degree of precision, with precise, light and efficient motors, which is expensive.

[0028] This robotic arm does not allow for inexpensive, simple, rapid and repeatable marking of a few millimeters to a few centimeters on a side on a part of any shape.

[0029] It is also bulky and unwieldy, making it difficult to transport.

[0030] In fact, there is no handy, lightweight and compact tool-holder device that allows you to simply, quickly and repeatably mark a pattern from a few millimetres to a few centimetres on a side on a surface of a part, whether it is flat or curved in whole or in part.

[0031] It is an objective of the invention to propose a handy, lightweight and compact tool-holder device, making it possible to simply, quickly, precisely and repeatably mark a pattern of a few millimeters to a few centimeters on each side on a surface of a part, whether it is flat or curved in whole or in part.

[0032] It is an objective of the invention to propose a system for marking a pattern comprising such a tool-holder device equipped with a marking tool making it possible to simply, quickly, precisely and repeatably mark a pattern from a few millimeters to a few centimeters on each side on a surface of a part, whether it is flat or crooked in whole or in part.

[0033] It is also an objective of the invention to propose a method for marking a pattern, in particular a few millimeters to a few centimeters on each side, on a surface of a part, whether it is flat or crooked in whole or in part.

[0034] It is also an objective of the invention that the use of such a tool-carrying device does not cause musculoskeletal disorders in a user of such a tool-carrying device.

[0035] It is also an objective of the invention to propose more particularly a handy, light and compact scarifier, making it possible to simply, quickly, precisely and repeatably produce a standardized grid of a few millimeters to a few centimeters on each side on a surface of a part, whether flat or crooked in whole or in part, to carry out a standardized tape test without having to cut out a portion of said part.

[0036] It is also an objective of the invention to propose a scarifying system making it possible to produce a standardized grid of a few millimeters to a few centimeters on each side on a surface of a part, whether flat or crooked in whole or in part, to carry out a standardized tape test, without having to cut out a portion of said part.

[0037] It is also an objective of the invention to propose a standardized grid method of a few millimeters to a few centimeters on each side on a surface of a part, whether flat or crooked in whole or in part, to carry out a standardized tape test.

[0038] To this end, the invention relates to a portable tool-carrying device, comprising a longitudinal body with a handle, a first element pivoting along a first axis, first element on which is mounted eccentrically a second element pivoting along a second axis parallel to the first axis, second element on which is mounted eccentrically a third element capable of receiving a tool having a marking end, the tool-carrying device also comprising at least two motor assemblies and transmission means capable of actuating in rotation at least the first and / or second element.

[0039] Advantageously, the at least two motors of the at least two motor and transmission means assemblies are mounted juxtaposed longitudinally in the body, parallel to each other, and offset relative to the first, second and third elements.

[0040] This allows the overall size to be reduced while ensuring rotation of the first and / or second element.

[0041] Thus, it is possible to propose a tool-holding device which is portable and capable of moving a tool on a disc perpendicular to the first axis to carry out marking of a pattern inscribed in the surface of said disc, by varying the angular position of the first and / or the second element, which causes the marking end of the tool to follow a chosen trajectory.

[0042] It should be noted that by acting on the angular position of the first and / or second element, it is possible to generate a trajectory comprising one or more rectilinear portions.

[0043] This trajectory can be complex and include, alone or in combination, one or more rectilinear parts, one or more curved parts, one or more angles, etc.

[0044] This makes it possible to form a grid pattern in a single operation, without having to move the tool holder or rotate it a quarter turn to make perpendicular lines.

[0045] The at least two motors are stationary relative to each other and relative to the body of the tool-carrying device, and they are offset relative to the pre- first, second and third elements, which reduces the inertia of the moving parts. Thus, they can rotate at high speed to accelerate marking without compromising marking accuracy.

[0046] This type of motor is inexpensive, as it is standard, which makes the tool holder device economical.

[0047] The motors may in particular be placed laterally relative to the first, second and third elements and perpendicular to the first axis.

[0048] The motors can alternatively be placed laterally relative to the first, second and third elements and parallel to the first axis.

[0049] This tool holder device may comprise peripheral support pins, in particular at least two, preferably but optionally three, configured to come to bear against a surface to be marked when a user positions the tool holder device equipped with a tool opposite a surface to be marked. These support pins may comprise a rough, adhesive free end or one comprising a claw to ensure better support against the surface against which they are supported. Thus, the user of the tool holder is assured of the support and the correct distance of the tool holder device relative to the surface to be marked and can simply hold it without effort while the tool marks a pattern on the surface of the part.

[0050] According to a characteristic of the invention, the third element is pivotally mounted relative to the second element along a third axis parallel to the first axis, and the third element comprises a receiving member configured to receive the tool.

[0051] The pivoting can be done freely, depending on the trajectory followed.

[0052] The pivoting can also be controlled by an additional motor and transmission assembly, installed at the level of the third element or juxtaposed longitudinally in the body of the tool holder device, parallel to the other motor and transmission assemblies.

[0053] According to a characteristic of the invention, said member is configured so that the marking end of the tool is eccentric relative to the third pivot axis.

[0054] According to an alternative characteristic of the invention, said member is configured so that the marking end of the tool is centered relative to the third pivot axis.

[0055] According to a characteristic of the invention, the receiving member of the third element comprises elastic return means capable of moving in translation a tool that said third element receives parallel to the first axis between a so-called rest position and a so-called withdrawal position of said tool in said third element.

[0056] This allows a tool mounted in the tool holder to be in contact with a surface of a part to be marked even if this surface is left-handed.

[0057] According to a characteristic of the invention, the receiving member of the third element comprises tool translation means capable of controlling the translation of a tool that said third element receives parallel to the first axis between a so-called rest position and a so-called withdrawal position of said tool in said third element.

[0058] This allows a discontinuous pattern to be produced with device 1.

[0059] According to a characteristic of the invention, the distance between the first axis and the second axis corresponds to the distance between the second axis and the third axis.

[0060] This makes it possible to produce a pattern over the entire surface of a disc, even in the center of said disc, by allowing a path of a tool mounted on this tool holder device to pass through the pivot center through which the first axis passes.

[0061] According to a characteristic of the invention, the tool-carrying device is equipped with a blade making it possible to form a grid by scratching or scarifying, said tool-carrying device forming a scarifier.

[0062] This scarifier is electric, handy, light and compact, allowing you to simply, quickly, precisely and repeatably create a standard grid of a few millimeters to a few centimeters on each side on a surface of a part, whether flat or crooked in whole or in part, to carry out a standardized tape test.

[0063] The invention also relates to a system for marking a pattern comprising a tool-holder device as described above and equipped with a marking tool, said system comprising: - means for calculating the corresponding trajectory of the marking tool to form a defined pattern, - means for calculating the movements of the first, second and third elements of the tool-holder device allowing the marking tool to follow the calculated trajectory, - means for calculating the actuation steps of the at least two motors of the tool-carrying device allowing the marking tool to follow the calculated trajectory, - means for recording the actuation steps of the at least two motors of the tool-carrying device in a recording medium of the tool-carrying device, - means of transmitting the recorded actuation steps to the tool holder device.

[0064] According to a characteristic of the invention, the marking system comprises a tool-holder device equipped with a blade making it possible to form a grid by scratching or scarifying, said marking system forming a scarifying system.

[0065] The invention also relates to a method for marking a pattern, in particular a few millimeters to a few centimeters on each side, on a surface of a part, whether it is flat or crooked in whole or in part, characterized in that it comprises the following steps: - determination of a pattern to be marked on a surface of a part by implementing a marking system having the characteristics described above, - implementation of software in a computer unit for calculating the corresponding trajectory of the marking tool, - implementation of software in a computer unit for calculating the movements of the first, second and third elements of the tool-holder device allowing the marking tool to follow the calculated trajectory, - implementation of software in a computer unit for calculating the actuation steps of the at least two motors of the tool-carrying device allowing the marking tool to follow the calculated trajectory, - recording the actuation steps of the at least two motors of the tool holder device in a recording medium of the tool holder device, - implementation of the actuation of the at least two motors of the tool holder device by a control unit of the tool holder device according to the steps of actuation of the at least two motors of sets of motors and transmission means of the tool holder device recorded in a recording medium of the tool holder.

[0066] According to a characteristic of the invention, the calculation steps of the method integrate consideration of at least one parameter of play of the sets of motors and transmission means of the tool holder device implemented in this method.

[0067] This allows existing play to be taken into account, for example when switching from clockwise to counterclockwise rotation or vice versa of a set of motors and transmission means.

[0068] According to a characteristic of the invention, the method comprises steps of determining at least one play parameter of the assemblies of motors and transmission means of the tool holder device, in particular: - actuation of at least two motors of the tool-carrying device to form a pattern with predetermined dimensions on a flat surface, - measurement of the dimensions of said engraved pattern, - implementation of software in a computer unit for calculating at least one play parameter of the motor assemblies and transmission means of the tool holder device from the variations between the measured dimensions of the marked pattern and the predetermined dimensions of said pattern.

[0069] This makes it possible to simply measure the existence of one or more games, which may appear or change over time.

[0070] The invention relates to a method for scarifying a surface of a part, characterized in that it comprises the steps of the marking method described above, and in that the tool-carrying device of the marking system is equipped with a blade making it possible to form a grid by scratching or scarifying.

[0071] Other aims and advantages of the present invention will appear during the description which follows with reference to the attached drawings illustrating exemplary embodiments and in which:

[0072] [Fig 1] is a schematic front perspective view of a tool-holding device according to the invention, in which a tool in the form of a blade is installed, seen from below.

[0073] [Fig 2] is a partial schematic view of parts of the tool-carrying device of figure 1, seen from below in perspective, without longitudinal body 2, revealing part of the motor assemblies and transmission means and the first, second and third elements of the device, equipped with a blade.

[0074] [Fig 3] is a partial schematic view of the front of the mechanisms of the tool holder device of figure 2 seen from below in perspective, without longitudinal body.

[0075] [Fig 4] is a partial schematic view of the front of the mechanisms of the tool holder device of figure 3 seen from below in perspective, without the drive wheel of the first element.

[0076] [Fig 5] is a partial schematic view of the front of the mechanisms of the tool holder device of figure 4 seen from below in perspective, without the upper part of the first element.

[0077] [Fig 6] is a side view schematic diagram of the transmissions of the first, second and third elements of the device of Figure 1.

[0078] [Fig 7] is a schematic diagram seen from below and perpendicular to the axes of rotation of the first, second and third elements of the device of figure 6.

[0079] The invention relates to a tool-carrying device 1, hereinafter referred to as "device 1". The device 1 comprises a front, a rear, a top and a bottom.

[0080] With reference to the figures, the tool holder device 1 is considered in a position of use.

[0081] Thus, as illustrated in Figure 1, the front of the tool holder device 1 is to the right of Figure 1, and the rear of the tool holder device 1 is to the left of Figure 1, the bottom of the tool holder device 1 is at the bottom of Figure 1, and the top of the tool holder device 1 is at the top of Figure 1.

[0082] Figures 1 to 5 partially show the device 1 in isometric view from below.

[0083] The device may comprise a longitudinal body 2, hereinafter also referred to as “body 2”, extending from the rear to the front along an axis longitudinal 00'.

[0084] This body 2 can be formed in several pieces.

[0085] The body 2 may form a handle, or include a handle-forming portion, allowing a user to hold the device 1 in one hand, and making the device 1 portable.

[0086] Body 2 is open on the underside, revealing a first element 3, a second element 4 and a third element 5.

[0087] In fact, the first element 3 is in the form of a cylinder pivoting around a first axis AA'.

[0088] This first axis AA' can extend in the up / down direction of the device 1.

[0089] The second element 4 is mounted eccentrically relative to the first axis AA', pivoting relative to the first element 3 around a second axis BB' parallel to the first axis AA' and distinct from it.

[0090] The second element 4 extends downward from the first element 3.

[0091] The second element 4 is in the form of an arm extending from a pivot part around the second axis BB to a free end on which the third element 5 is mounted eccentrically relative to the second axis BB'.

[0092] The third element 5 may comprise a tool receiving member 50, here a housing for receiving a marking tool 6, having a marking end 60, here the marking tool 6 comprising a flat base from which extends downwards a pointed blade with a cutting edge inclined at 30 degrees.

[0093] Marking tool 6 is also referred to hereinafter as “tool 6”.

[0094] The third element 5 can pivot around a third axis CC' relative to the end of the arm of the second element 4.

[0095] The marking end 60 of the tool 6, here the blade tip, can be centered so that the third axis CC' passes through the tip of the marking end 60, here the blade tip.

[0096] Alternatively, the marking end 60 of the tool 6, here the blade tip, can be off-centered relative to the third axis CC'.

[0097] The pivoting of the first element 3 can be done by the actuation of a first motor and transmission means assembly 7, comprising a first motor 70 and first transmission means 71 of a rotational movement of a shaft of said first motor 70 to the first element 3.

[0098] Thus a rotation of the shaft of the first motor 70 causes the rotation of the first element 3 around the first axis AA'.

[0099] The pivoting of the second element 4 is done by the actuation of a second motor and transmission means assembly 8, comprising a second motor 80 and second transmission means 81 of a rotational movement of a shaft of said second motor 80 to the second element 4.

[0100] Thus a rotation of the shaft of the second motor 80 causes the rotation of the second element 4 around the first axis AA'.

[0101] At least the first motor 70 and the second motor 80 are mounted juxtaposed longitudinally in the body 2, immobile and parallel to each other, one above the other, and offset relative to the elements 3, 4.

[0102] The two motors 3,4 can in particular be placed laterally relative to the elements 3,4,5 and perpendicular to the first axis AA'.

[0103] The first and second transmission means 71, 81 can be surrounded by a casing 10 of the device 1.

[0104] The first and second transmission means 71, 81 may each comprise a worm gear, and they may comprise gears and / or epicyclic gear trains.

[0105] First and second worm screws 710, 810 are tubular, they are fitted and made integral in rotation with respectively the shafts of the first and second motors 70, 80, for example by a key engaged in grooves of a shaft and of the opposite worm screw 710, 810.

[0106] The first and second worm screws 710, 810 cooperate respectively with first and second toothed wheels 711, 811.

[0107] The first toothed wheel 711 is rotationally fixed to the first element 3.

[0108] The second toothed wheel 811 is rotationally fixed to a toothed shaft 812, comprising teeth on its periphery, and carried by the first axis AA'. The teeth of this toothed shaft 812 cooperate with teeth of a wheel rotationally fixed to a drive shaft 813 carried by the second axis BB' and rotationally fixed to the second element 4. This drive shaft 813 is in a light hollowed out in the first element 3, and is engaged on the one hand in a bearing of the first element 3 and on the other hand in a bearing of the second toothed wheel 811, allowing it to pivot relative to the first element 3 and to the second toothed wheel 811.

[0109] The pivoting of the third element 5 may be free to rotate, for example the third element 5 may be mounted inside a ball bearing, said ball bearing being housed in a hole of the second element 4.

[0110] Alternatively, the pivoting of the third element 5 can be done by the actuation of a third motor and transmission means assembly, comprising a third motor and third means for transmitting a rotational movement of a shaft of said third motor to the third element 5.

[0111] Said third motor can be mounted juxtaposed longitudinally in the body 2, stationary and parallel with respect to the first and second motors 70, 80 and offset with respect to the elements 3, 4, 5.

[0112] Said third transmission means may comprise a gear with wheel and a worm screw.

[0113] A third tubular worm screw can be fitted and made integral in rotation with the third motor, for example by a key engaged in grooves of a shaft and the opposite worm screw.

[0114] The third worm screw can cooperate with a third toothed wheel which can drive a gear system similar to that driving the second element 4 and configured to drive the third element 5, comprising a central axis carried by the first axis AA'.

[0115] The third transmission means may comprise gears and / or epicyclic gear trains.

[0116] In the body 2, above and below the first element 3, the toothed shaft 812 and possibly third transmission means of the ball bearings may be present, configured to allow free rotation around the axis AA' of the first element 3, the toothed shaft 812 and possibly the third transmission means.

[0117] The device 1 comprises means for actuating the at least two motors 70, 80 in the form of a control unit 21 comprising recording means and calculation means, for example an electronic card capable of receiving at least one recording medium of the removable memory card type, said motors being connected to the electronic card 21 by electrical cables for transmitting a signal.

[0118] The device 1 comprises means for supplying the at least two motors 70, 80, in the form of batteries 22 housed in the body 2 or an electric wire which can be connected to a domestic electricity supply network via a transformer, said motors being connected to the supply means by electric power cables as illustrated in figure 2.

[0119] The tool receiving member 50 of the third element 5 may comprise elastic return means capable of moving in translation a tool 6 that said third element receives parallel to the first axis AA', between a so-called rest position in which the tool 6 is advanced forwards and a so-called withdrawal position of said tool 6 in said tool receiving member 50 of a tool 6 in which the tool 6 is moved back backwards. These rest and withdrawal positions are defined respectively by stops blocking the translation of the tool 6 in the receiving member 50 between a front stop for maximum exit of the tool 6 and a rear stop for maximum withdrawal of the tool 6 in the receiving member 50 of the third element 5.

[0120] Thus, in the event of pressing on a surface of the device 1, the marking end 60 can come into contact with the surface to mark it, and be in an intermediate position perpendicular to said surface between the rest position and the retracted position of the elastic return means, which ensures that the contact of the marking end 60 against the surface is maintained in the event of left surface portion. The device 1 may comprise, alternatively or in addition to the elastic return means, tool translation means capable of controlling the position of the tool relative to the surface. This makes it possible to produce a discontinuous pattern with the device 1.

[0121] This tool-carrying device 1 may comprise support pins 20 peripheral to the first, second and third elements 3, 45, in particular at least two support pins 20. These pins have a height configured to come into contact with a surface to be marked when a user positions the tool-carrying device 1 equipped with a tool 6 opposite a surface to be marked, their height allowing an intermediate position of the marking end 60 between the rest position and the retracted position.

[0122] The support pins 20 may include means for adjusting their height.

[0123] The spacing between the first axis AA' and the second axis BB'- can correspond to the spacing between the second axis BB' and the third axis CC'.

[0124] The device 1 as described previously and illustrated in figures 1 to 5 is equipped with a blade as tool 6, it forms a scarifier making it possible to form a grid by scratching or scarification.

[0125] The device 1 equipped with a tool 6 can be part of a marking system according to the invention making it possible to mark a defined pattern.

[0126] This marking system also includes:

[0127] - means for calculating the corresponding trajectory of the tool 6 to form a defined pattern, these calculation means comprising for example a computer-type computing unit allowing the implementation of software to carry out this calculation and obtain trajectory information, - means for calculating the movements of the first, second and third elements 3, 4, 5 of the device 1 allowing the tool 6 to follow the trajectory calculated to form the defined pattern, these calculation means comprising for example a computer-type computing unit allowing the implementation of software to carry out this calculation from the trajectory information to obtain movement information, - means for calculating the actuation steps of the at least two motors 70, 80 of the device 1 allowing the tool 6 to follow the calculated trajectory, these calculation means comprising for example a computer-type computing unit allowing the implementation of software to carry out this calculation from the movement information to obtain actuation information, - means for recording the actuation steps of the at least two motors 70, 80 of the device 1 in a recording medium of the tool-carrying device, these recording means comprising for example a card removable memory and configured to record and / or read at least actuation information therein, - means for transmitting the recorded actuation steps to the device 1, these transmission means comprising for example a housing connected to the control unit 21 of the device 1 configured to receive said removable memory card and to record and / or read at least actuation information there.

[0128] This marking system may also include means for taking into account in the calculations at least one play parameter of the motor and transmission means assemblies 7, 8 of the device 1.

[0129] This marking system may also include means for determining at least one game parameter and for recording said at least one game parameter on means for recording calculation information, or other similar recording means.

[0130] Computing means, computing units and software can be confused respectively.

[0131] The calculation steps can be carried out on a computer unit external to the device 1, for example of the computer type, then the actuation steps, possibly other information and possibly the at least one game parameter can be recorded in recording means, for example of the memory card type, which is then inserted into the device 1.

[0132] Alternatively, the device 1 may comprise an integrated computer unit, of the electronic card type with microprocessor, which performs the calculations and records the actuation steps and possibly other information in recording means, for example of the memory card type.

[0133] Referring to Figure 7, the marking end 60 can pivot in a plane that is perpendicular to the axes AA', BB', and CC'. It is possible to define an orthonormal frame of reference in which the marking end 60 moves to form a defined pattern. This frame of reference has an abscissa axis in x and a ordinate axis in y centered on the intersection between the axis of rotation AA' of the first element 3 and said plane as illustrated in Figure 7.

[0134] Actuation of the first motor 70 makes it possible to pivot the first toothed wheel 711 secured to the first element 3 by an angle α around the axis AA' of the first element, measured relative to the abscissa axis.

[0135] Actuation of the second motor 80 makes it possible to pivot the second toothed wheel 811 secured to the toothed shaft which drives the drive shaft 813 by an angle P around the axis BB' of the second element 4, measured relative to the abscissa axis.

[0136] Angles a and P are considered positive when the displacement is in a trigonometric direction in the orthonormal frame illustrated in figure 7.

[0137] The marking end 60 therefore moves in the illustrated orthonormal frame of reference in figure 7, and its coordinates in said orthonormal frame depend on the angles a and p.

[0138] In order for the marking end 60 to form a defined pattern, a trajectory of the corresponding marking end 60 can be calculated, and a discretization of this trajectory into a succession of consecutive points can be calculated.

[0139] To determine the actuations of the first motor 70 and the second motor 80 necessary for the marking end 60 to pass from one point to a point following points forming the trajectory, the values ​​of the angles a and P can be calculated for the position of each point of coordinates (x, y) in said orthonormal reference frame by solving the following system of equations:

[0140] [Math

[0141] In this system of equations, R.812 corresponds to the radius of the second toothed wheel 812, RSB corresponds to the radius of the drive shaft 813 which cooperates with the second toothed wheel 812. It should be noted that the sum of these two radii Rsi2 and RSB corresponds to the distance between the axis of rotation of the first element AA' and the axis of rotation of the second element BB'.

[0142] DBC corresponds to the distance between the axis of rotation of the second element BB' and the axis of rotation of the third element CC'.

[0143] The calculation can take into account the values ​​of the angles a and P of the previous point of the trajectory, to optimize the actuations of the motors.

[0144] The calculation can take into account the values ​​of the angles a and P of the next point of the trajectory, to optimize the actuations of the motors.

[0145] It should be noted that if on the one hand the distance between the axis of rotation of the first element AA' and the axis of rotation of the second element BB' and on the other hand the distance between the axis of rotation of the first element AA' and the axis of rotation of the second element BB' are equal, this makes it possible to produce a pattern over the entire surface of a disc, even in the center of said disc.

[0146] This marking system allows the implementation of the marking method according to the invention described below.

[0147] The invention also relates to a method for marking a pattern, in particular a few millimeters to a few centimeters on each side, on a surface of a part, whether flat or crooked in whole or in part, and comprising the following steps: - determination of a pattern to be marked on a surface of a part by implementing a marking system as described previously, CORRECTED SHEET (RULE 91) ISA / EP - implementation of software in a computer unit, for example of the computer type, for calculating the corresponding trajectory of the marking tool 6, - implementation of software in a computer unit, for example of the computer type, for calculating the movements of the first, second and third elements 3, 4, 5 of the device 1 allowing the marking tool 6 to follow the calculated trajectory, - implementation of software in a computer unit, for example of the computer type, for calculating the actuation steps of the at least two motors 70, 80 of the device 1 allowing the marking tool 6 to follow the calculated trajectory, - recording the actuation steps of the at least two motors 70, 80 of the device 1 in a recording medium of the device 1, - implementation of the actuation of the at least two motors 70, 80 of the device 1 by a control unit 21, for example an electronic card, of the device 1 according to the steps of actuation of the at least two motors 70, 80 of the device 1 recorded in the recording medium.

[0148] During the calculation steps, this method can take into account at least one play parameter of the sets of motors and transmission means 7,8 of the device 1.

[0149] The method may also include steps of determining at least one play parameter of the assemblies of motors and transmission means 7, 8 of the device 1, in particular: - actuation of at least two motors 70, 80 of the device 1 to form a pattern with predetermined dimensions on a flat surface, - measurement of the dimensions of said engraved pattern, - implementation of software in a computer unit, for example of the computer type, for calculating at least one parameter of play of the sets of motors and transmission means 7, 8 of the device 1 from the variations between the measured dimensions of the marked pattern and the predetermined dimensions of said pattern.

[0150] This marking process can be implemented by using the marking system described above.

[0151] A device 1 as described above comprising a blade making it possible to form a grid by scratching or scarification as a marking tool 6 as illustrated in figures 1 to 5 makes it possible to form a scarifier.

[0152] A marking system as described above comprising a blade making it possible to form a grid by scratching or scarification as a marking tool 6 equipping the device 1 as illustrated in figures 1 to 5 makes it possible to form a scarifying system.

[0153] A marking method as described above comprising a blade allows- both to form a grid by scratching or scarification as marking tool 6 equipping the device 1 as illustrated in figures 1 to 5 makes it possible to form a scarification process.

Claims

Claims

1. Portable tool-carrying device (1), comprising a longitudinal body (2) with a handle, a first element (3) pivoting about a first axis (AA'), first element (3) on which is mounted eccentrically a second element (4) pivoting about a second axis (BB') parallel to the first axis (AA'), second element (4) on which is mounted eccentrically a third element (5) capable of receiving a marking tool (6) having a marking end (60), the tool-carrying device (1) also comprising at least two motor and transmission means assemblies (7, 8) capable of actuating in rotation at least the first and / or second element (3, 4), characterized in that the at least two motors (70, 80) of the at least two motor and transmission means assemblies (7, 8) are mounted juxtaposed longitudinally in the body (2), parallel to each other, and offset relative to the first, second and third elements (3, 4, 5).

2. Tool holder device (1) according to claim 1, characterized in that the third element (5) is pivotally mounted relative to the second element (4) along a third axis (CC') parallel to the first axis (AA'), and that it comprises a receiving member (50) configured to receive said tool (6).

3. Tool holder device (1) according to claim 2, characterized in that the receiving member (50) of the third element (5) comprises elastic return means capable of moving in translation a marking tool (6) that said third element (5) receives parallel to the first axis (AA') between a so-called rest position and a so-called withdrawal position of said tool (6) in said third element (5).

4. Tool holder device (1) according to claim 2, characterized in that the receiving member (50) of the third element (5) comprises tool translation means capable of controlling the translation of a tool that said third element receives parallel to the first axis between a so-called rest position and a so-called withdrawal position of said tool in said third element.

5. Tool holder device (1) according to one of claims 2 to 4, characterized in that the distance between the first axis (AA') and the second axis (BB') corresponds to the distance between the second axis (BB') and the third axis (CC').

6. Scarifier characterized in that it is formed from a tool-carrying device (1) according to one of claims 2 to 5, said tool-carrying device tool (1) being equipped with a blade allowing a grid to be formed by scratching or scarifying.

7. System for marking a pattern comprising a tool-holding device (1) according to one of claims 2 to 5 and equipped with a marking tool (6), said system comprising: - means for calculating the corresponding trajectory of the marking tool (6) to form a defined pattern, - means for calculating the movements of the first, second and third elements (3, 4, 5) of the tool-holder device (1) allowing the marking tool (6) to follow the calculated trajectory, - means for calculating the actuation steps of the at least two motors (70, 80) of the tool-carrying device (1) allowing the marking tool (6) to follow the calculated trajectory, - means for recording the actuation steps of the at least two motors (70, 80) of the tool holder device (1) in a recording medium of the tool holder device (1), - means for transmitting the recorded actuation steps to the tool holder device (1).

8. Scarifying system characterized in that it is formed from a marking system according to claim 7, said tool-carrying device (6) being equipped with a blade making it possible to form a grid by scratching or scarifying.

9. Method for marking a pattern, in particular a few millimeters to a few centimeters on each side, on a surface of a part, whether it is flat or crooked in whole or in part, characterized in that it comprises the following steps: - determination of a pattern to be marked on a surface of a part by implementing a marking system having the characteristics of a marking system according to claim 7, - implementation of software in a computer unit for calculating the corresponding trajectory of the marking tool (6), - implementation of software in a computer unit for calculating the movements of the first, second and third elements (3, 4, 5) of the tool-holder device (1) allowing the marking tool (6) to follow the calculated trajectory, - implementation of software in a computer unit for calculating the actuation steps of the at least two motors (70, 80) of the tool-carrying device (1) allowing the marking tool (6) to follow the calculated trajectory, - recording the actuation steps of the at least two motors (70, 80) of the tool-carrying device (1) in a support recording of the tool holder device (1), - implementing the actuation of the at least two motors (70, 80) of the tool holder device (1) by a control unit (21) of the tool holder (1) according to the steps of actuation of the at least two motors (70, 80) of the tool holder device (1) recorded in a recording medium of the tool holder device (1).

10. Marking method according to claim 9, characterized in that the calculation steps of the method integrate taking into account at least one parameter of play of the sets of motors and transmission means (7, 8) of the tool holder device (1).

11. Marking method according to claim 10, characterized in that it comprises steps of determining at least one parameter of play of the assemblies of motors and transmission means (7, 8) of the tool holder device (1), in particular: - actuation of the at least two motors (70, 80) of the tool-carrying device (1) to form a pattern with predetermined dimensions on a flat surface, - measurement of the dimensions of said engraved pattern, - implementation of software in a computer unit for calculating at least one play parameter of the sets of motors and transmission means (7, 8) of the tool-carrying device (l) from the variations between the measured dimensions of the marked pattern and the predetermined dimensions of said pattern.

12. Method for scarifying a surface of a part, characterized in that it comprises the steps of the marking method according to one of claims 9 to 11, and in that the tool-carrying device (1) of the marking system is equipped with a blade making it possible to form a grid by scratching or scarifying.

Images