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WO1989009140A1 - An automatic device for engraving marks and figures - Google Patents

An automatic device for engraving marks and figures Download PDF

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Publication number
WO1989009140A1
WO1989009140A1 PCT/IT1989/000018 IT8900018W WO8909140A1 WO 1989009140 A1 WO1989009140 A1 WO 1989009140A1 IT 8900018 W IT8900018 W IT 8900018W WO 8909140 A1 WO8909140 A1 WO 8909140A1
Authority
WO
WIPO (PCT)
Prior art keywords
carriage
point
localizer
scriber
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IT1989/000018
Other languages
French (fr)
Inventor
Mauro Salvetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1989009140A1 publication Critical patent/WO1989009140A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/06—Accessories, e.g. tool or work holders
    • B44B3/068—Tracer heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25—Movable or adjustable work or tool supports
    • B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
    • B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
    • B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
    • B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/009—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings using a computer control means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
    • B44B3/06—Accessories, e.g. tool or work holders
    • B44B3/061—Tool heads
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/21—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device
    • G05B19/25—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for continuous-path control
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45212—Etching, engraving, sculpturing, carving
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49388—Computer controlled movement of plotter is transferred to tool by pantograph
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • the present invention relates to a device suitable for carrying out the engraving of marks or figures on an object.
  • Engraving machines used up to now by goldsmiths, engravers, scribers, pattern makers and sign makers consist of a variable ratio pantograph having at one end a scriber or cutter, capable of being placed m a suitable vertical position, which is drawn horizontally over the object to be engraved by the movement itself of the pantograph arm. On the other end of the arm a localizer point is fixed, which is moved by the operator, following the outlines plotted on the dies which consist of plastic or brass plates, showing the characters or figure to be engraved, on an equal or different scale from that of the engraving to be made. Such dies are applied to the type holding table of the machine. In order to vary the scale ratio between the die and the engraving to be made, the operator varies the length of the pantograph arms appropriately.
  • the engraving unit is positioned vertically on the object to be engraved by means of the operator working a lever, which is pushed down to allow scribing and raised at the completion of the work.
  • Another problem consists in the choice of the most suitable ratio of the scriber for carrying out a particular engraving, in that, in the case where the type holding table is not capable of containing all dies relevant to a given engraving, the overall view of the result can be obtained only after the first model has been produced.
  • a further problem relates to the storage and classification of the dies already used, in such a way as to prevent their deterioration and to find easily a die already used for using again. This involves the taking up of considerable space for keeping the dies and loss of time for finding and re-classifying them. It may also be necessary to re-set the dies already used, if they have deteriorated or been lost.
  • the aim of the present invention is to produce an engraving machine capable of avoiding the above-mentioned drawbacks, that is, one which is automatic and which eliminates the use of type dies, allowing the preliminary visualization of the complete engraving so as to allow the a priori choice of the correct ratio of the pantograph and which allows the types and drawings to be stored into magnetic supports or Compact-disks normally used as a computer memory, rendering filing and use very rapid.
  • a further aim is to produce a simple, low-cost, high-precision device, which can if necessary be applied to the pantograph engraving machines already produced.
  • One preferred embodiment foresees a rotating coupling between the point guide carriage and the localizer point of the pantograph.
  • a vertical localizer point positioner is foreseen, consisting, for example, of a piston integral with the said point and operable by means of a solenoid valve, which can also been controlled by the computer.
  • Another solution can instead comprise an electromagnet, also operated by the computer.
  • a system may also been foreseen which produces a continuous vertical (axis Z) operation of the localizer point. This can be realized, for example, with a screw operated by a motor controlled by the computer. With this embodiment, continuous operational control of the movement of the localizer point on axis Z can be obtained.
  • the moving means of the point guide carriage preferably consists of two motors controlled by the computer, which operate respectively a bridge crane and the said carriage, which is slidably mounted in a longitudinal direction on the said bridge crane.
  • the motors are of the stepping type. They can be controlled by encoders (incremental rotary trasducers).
  • figure 1 shows an overall view of the present invention
  • figure 2 shows a plan view of the moving means of the localizer point
  • figure 3 shows a section taken along the line 3-3 in figure 2
  • figure 4 shows an enlarged portion of the section in figure 3
  • figure 5 shows in perspective the enlargement of the detail of the connection of the bridge crane making up part of the moving means shown in figures 2, 3 and 4
  • figure 6 shows a system for the continuous vertical operation of the localizer point.
  • FIG 1 shows the device which is the object of the present invention, which consists of a pantograph 5 whose localizer point 4 is functionally connected to an electronic
  • the localizer point 4 defining an axis 0-0 is provided at one end of the arms of the pantograph 5.
  • the other end of the arm of the pantograph 5 is instead integral with a localizer point or cutter 6 of the known type.
  • the vertical positioning of the localizer point 6 is obtained by the vertical movement of a piston 7, located above the localizer point 4 and integral with it.
  • the piston 7 can be operated by means of a solenoid valve 8 and feed pipes 9, the said solenoid valve 8 capable of being controlled by the computer 3, by means of the electronic card 2.
  • FIGS. 2 and 3 show the moving means 1 consisting of a rectangular flame 10, on whose two longer sides 26, acting as a tracks, a brigde crane 11 slides, which moves in the direction of the axis X, as shown in the figure.
  • the bridge crane 11 consists of two parallel transverse element 12, as well as two shorter terminal sides 13 which connect the elements 12.
  • the elements 12 act, m their turn, as tracks on which a point guide carriage 14 slides (in the direction of the axis Y), to which the localizer point 4 can be rotatably connected.
  • the said connection shown in figure 4, can be realized providing a groove 4a in the localizer point 4 into which penetrates a pin 14a, integral with the carriage 14.
  • the point 4, penetrating loosely into the hole 14b of the carriage 14, can rotate in it, while the pin 14a restricts its vertical position only in the direction of the axis 0-0.
  • the axis 0-0 of the localizer point coincides with the axis of the carriage 14; by moving the said carriage, the axis 0-0 of the localizer point is moved also.
  • FIG 4 shows the detail of the point guide carriage 14, integral with rollers 15, which slide on horizontal projections 12a provided in the elements 12.
  • a screw 16 with its ends rotatably supported at the central points of the shorter sides 25 of the flame 10 and parallel to the longer sides 26 of the same, rotating freely and moved by an electric motor 17 located at one end of the screw 16.
  • a screw 19 is located among the elements 12 of the bridge crane and parallel to them, having its ends rotatably supported at the central points of the shorter terminal sides 13. This screw 19 is moved by an electric motor 20, located at one end of it.
  • the electric motors 17 and 20 are controlled by two "encoders” (incremental rotary transducers), 22 for the motor 17 and 23 for the motor 20 respectively. These encoders control the number of revolutions made by the motor, by means of the computer 3, the electronic card 2 and electric cables 24, shown also in figure 1.
  • the device described works as follows: the operator keyboards on the computer 3 the writing or figure which is to be engraved, by means of an appropriate graphic programme, for example of the "WYSIWYG" type (What You See Is What You Get), carrying out the movements, rotations, transverses, enlargements, reductions or other operations necessary for the graphics of the engraving; usually the writing of the drawings keyboarded on the computer is on a larger scale than that of the engraving to be obtained, so that the degree of precision and clarity of the engraving itself is increased when the said writing or drawing is reduced using the ratio of the pantograph. Thus even very small engravings can be realized with great accuracy.
  • the "WYSIWYG" type What You See Is What You Get
  • the computer 3 controls the operation of the solenoid valve 8 which, by means of the feed pipe 9, allows the vertical movement of the piston 7 and, therefore, the lowering or raising of the scriber 6 on the workpiece to be engraved.
  • the computer 3 controls the encoders 22, and 23, which in their turns move the motors 17 and 20.
  • the motors set in rotation respectively the screw 16, which allows the bridge crane 11 to slide along the axis X, and the screw 19, which allows the point guide carriage 14 to slide along the axis Y.
  • the engraving required is obtained by controlling the movement of the localizer point 4 along the axes X and Y and by drawing, in consequence, the scriber 6, by means of the arms of tne pantograph 5, and also by operating the lowering and raising movement of the scriber 6 on the workpiece to be engraved.
  • Figure 6 shows how the scriber 6 can be operated in continuous mode by the electronic card 2 of the computer.
  • the tool 6a is moved for example by a belt 31 acting on a pulley 32, connected by means of the shaft 33 to the said tool 6a.
  • the casing 34 which supports the tool has an axially (axis 2) movaole portion 35 which is integral with a nut screw 36, which engages with a worm screw 37 operated by a motor 38, controlled by an encoder 39.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Geometry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manipulator (AREA)

Abstract

The proposed device foresees a localizer point (4) for an engraving machine, being integral with one end of a pantograph (5), which is connected at its opposite end to a scriber (6) or a cutter. The localizer point (4) is connected to a point guide carriage (14) sliding on a plane, both along an axis (X) and along an axis (Y) perpendicular to it. The said connection can be such as to allow the carriage (14) to rotate about the axis (0-0) of the localizer point (4). The device comprises an electronic control device (2, 3) for controlling the movement of the point guide carriage (14) and preferably also for the vertical positioning of the scriber (6) on the workpiece to be engraved.

Description

"AN AUTOMATIC DEVICE FOR ENGRAVING MARKS AND FIGURES"
The present invention relates to a device suitable for carrying out the engraving of marks or figures on an object.
Engraving machines used up to now by goldsmiths, engravers, scribers, pattern makers and sign makers consist of a variable ratio pantograph having at one end a scriber or cutter, capable of being placed m a suitable vertical position, which is drawn horizontally over the object to be engraved by the movement itself of the pantograph arm. On the other end of the arm a localizer point is fixed, which is moved by the operator, following the outlines plotted on the dies which consist of plastic or brass plates, showing the characters or figure to be engraved, on an equal or different scale from that of the engraving to be made. Such dies are applied to the type holding table of the machine. In order to vary the scale ratio between the die and the engraving to be made, the operator varies the length of the pantograph arms appropriately.
The engraving unit, however, is positioned vertically on the object to be engraved by means of the operator working a lever, which is pushed down to allow scribing and raised at the completion of the work.
The main drawback relating to the machine described, in addition to the manual operation of the localizer point which entails considerable time and labour, lies in the use of the type dies. They have to be set each time, using standard types or even made up almost entirely by hand, in the case when special types or a drawing or trade-mark are to be engraved. Obviously this gives rise to considerable waste of time and consequent high costs.
Another problem consists in the choice of the most suitable ratio of the scriber for carrying out a particular engraving, in that, in the case where the type holding table is not capable of containing all dies relevant to a given engraving, the overall view of the result can be obtained only after the first model has been produced.
A further problem relates to the storage and classification of the dies already used, in such a way as to prevent their deterioration and to find easily a die already used for using again. This involves the taking up of considerable space for keeping the dies and loss of time for finding and re-classifying them. It may also be necessary to re-set the dies already used, if they have deteriorated or been lost.
The aim of the present invention is to produce an engraving machine capable of avoiding the above-mentioned drawbacks, that is, one which is automatic and which eliminates the use of type dies, allowing the preliminary visualization of the complete engraving so as to allow the a priori choice of the correct ratio of the pantograph and which allows the types and drawings to be stored into magnetic supports or Compact-disks normally used as a computer memory, rendering filing and use very rapid.
A further aim is to produce a simple, low-cost, high-precision device, which can if necessary be applied to the pantograph engraving machines already produced.
The above-mentioned aims have been achieved by providing the connection of a point guide carriage being mobile into a XY plane to the axis of the localizer point in a normal pantograph-type machine, the said carriage being operated by a programmable computer, which makes the carriage and therefore the said axis carry out the marks or figures required.
One preferred embodiment foresees a rotating coupling between the point guide carriage and the localizer point of the pantograph.
Preferably a vertical localizer point positioner is foreseen, consisting, for example, of a piston integral with the said point and operable by means of a solenoid valve, which can also been controlled by the computer. Another solution can instead comprise an electromagnet, also operated by the computer. A system may also been foreseen which produces a continuous vertical (axis Z) operation of the localizer point. This can be realized, for example, with a screw operated by a motor controlled by the computer. With this embodiment, continuous operational control of the movement of the localizer point on axis Z can be obtained.
The moving means of the point guide carriage preferably consists of two motors controlled by the computer, which operate respectively a bridge crane and the said carriage, which is slidably mounted in a longitudinal direction on the said bridge crane.
Preferably the motors are of the stepping type. They can be controlled by encoders (incremental rotary trasducers).
One preferred solution foresees each motor operating a worm screw acting upon a nut screw. The present invention will now be described in detail in one of its preferred embodiments, with reference to the enclosed drawings, in which:
figure 1 shows an overall view of the present invention; figure 2 shows a plan view of the moving means of the localizer point; figure 3 shows a section taken along the line 3-3 in figure 2; figure 4 shows an enlarged portion of the section in figure 3 ; figure 5 shows in perspective the enlargement of the detail of the connection of the bridge crane making up part of the moving means shown in figures 2, 3 and 4; figure 6 shows a system for the continuous vertical operation of the localizer point.
With reference to figure 1, it shows the device which is the object of the present invention, which consists of a pantograph 5 whose localizer point 4 is functionally connected to an electronic
"plotter" type interface 2, controlled, in its turn, by a computer
3. The localizer point 4 defining an axis 0-0 is provided at one end of the arms of the pantograph 5. The other end of the arm of the pantograph 5 is instead integral with a localizer point or cutter 6 of the known type. The vertical positioning of the localizer point 6 is obtained by the vertical movement of a piston 7, located above the localizer point 4 and integral with it. The piston 7 can be operated by means of a solenoid valve 8 and feed pipes 9, the said solenoid valve 8 capable of being controlled by the computer 3, by means of the electronic card 2.
Other solutions can be the use of an electromagnet or a continuous operation, obtained for example by means of a motor operating a warm screw, which engages with a nut screw.
With reference now to figures 2 and 3, these show the moving means 1 consisting of a rectangular flame 10, on whose two longer sides 26, acting as a tracks, a brigde crane 11 slides, which moves in the direction of the axis X, as shown in the figure. The bridge crane 11 consists of two parallel transverse element 12, as well as two shorter terminal sides 13 which connect the elements 12. The elements 12 act, m their turn, as tracks on which a point guide carriage 14 slides (in the direction of the axis Y), to which the localizer point 4 can be rotatably connected. The said connection, shown in figure 4, can be realized providing a groove 4a in the localizer point 4 into which penetrates a pin 14a, integral with the carriage 14. The point 4, penetrating loosely into the hole 14b of the carriage 14, can rotate in it, while the pin 14a restricts its vertical position only in the direction of the axis 0-0. In this way, the axis 0-0 of the localizer point coincides with the axis of the carriage 14; by moving the said carriage, the axis 0-0 of the localizer point is moved also.
Figure 4 shows the detail of the point guide carriage 14, integral with rollers 15, which slide on horizontal projections 12a provided in the elements 12.
Referring once more to figure 2, in it is shown a screw 16, with its ends rotatably supported at the central points of the shorter sides 25 of the flame 10 and parallel to the longer sides 26 of the same, rotating freely and moved by an electric motor 17 located at one end of the screw 16. A nut screw 18, shown in figure 4, integral with the bridge crane 11, slides on this screw, thus producing the movement of the bridge crane along the axis X.
A screw 19 is located among the elements 12 of the bridge crane and parallel to them, having its ends rotatably supported at the central points of the shorter terminal sides 13. This screw 19 is moved by an electric motor 20, located at one end of it. A nut screw 21, shown in figure 4, integral with the point guide carriage 14, slides on the screw 19, thus producing the movement of the carriage 14 along the axis Y in figure 2.
The electric motors 17 and 20 are controlled by two "encoders" (incremental rotary transducers), 22 for the motor 17 and 23 for the motor 20 respectively. These encoders control the number of revolutions made by the motor, by means of the computer 3, the electronic card 2 and electric cables 24, shown also in figure 1.
The rotating connection existing between the localizer point 4 and the carriage 14 is shown in figure 4.
The device described works as follows: the operator keyboards on the computer 3 the writing or figure which is to be engraved, by means of an appropriate graphic programme, for example of the "WYSIWYG" type (What You See Is What You Get), carrying out the movements, rotations, transverses, enlargements, reductions or other operations necessary for the graphics of the engraving; usually the writing of the drawings keyboarded on the computer is on a larger scale than that of the engraving to be obtained, so that the degree of precision and clarity of the engraving itself is increased when the said writing or drawing is reduced using the ratio of the pantograph. Thus even very small engravings can be realized with great accuracy.
Once the model of the engraving is completed and the reduction ratio of the pantograph has been selected, the computer 3, by means of an electronic card 2, controls the operation of the solenoid valve 8 which, by means of the feed pipe 9, allows the vertical movement of the piston 7 and, therefore, the lowering or raising of the scriber 6 on the workpiece to be engraved. At the same time, the computer 3, by means of an electronic card 2, controls the encoders 22, and 23, which in their turns move the motors 17 and 20. The motors set in rotation respectively the screw 16, which allows the bridge crane 11 to slide along the axis X, and the screw 19, which allows the point guide carriage 14 to slide along the axis Y. In this way, the engraving required is obtained by controlling the movement of the localizer point 4 along the axes X and Y and by drawing, in consequence, the scriber 6, by means of the arms of tne pantograph 5, and also by operating the lowering and raising movement of the scriber 6 on the workpiece to be engraved.
Figure 6 shows how the scriber 6 can be operated in continuous mode by the electronic card 2 of the computer. The tool 6a is moved for example by a belt 31 acting on a pulley 32, connected by means of the shaft 33 to the said tool 6a. The casing 34 which supports the tool has an axially (axis 2) movaole portion 35 which is integral with a nut screw 36, which engages with a worm screw 37 operated by a motor 38, controlled by an encoder 39.

Claims

1. An automatic device for engraving marks and figures comprising a normal pantograph type engraving machine having a localizer point (4) and a scriber (6), characterized in that the axis (0-0) of the localizer point (4) is connected to a carriage (14) movable on the plane along axes (XY), the said carriage (14) being operated by a programmable computer (3), which causes the said carriage (14) and therefore the said axis (0-0) to carry out the desired marks and figures.
2. A device according to claim 1, characterized in that the carriage (14) is rotatably connected to the localizer point (4).
3. A device according to claims 1 or 2, characterized in that a vertical positioner of the scriber (6) is also foreseen.
4. A device according to claims 3, characterized in that the positioner consists of a piston (7) integral with the said scriber (6) or by an electromagnet.
5. A device according to claim 3, characterized in that the vertical (Axis Z) operation of the scriber (6) is continuous, obtained for example by means of a worm screw moved by a motor controlled by a computer, the said screw engaging with a nut screw integral with the scriber (6).
6. A device according to any one of the previous claims, characterized in that the moving means of the point guide carriage (14) consists of a frame (10), on which a bridge crane (11) slides, on which the point guide carriage (14) is movable.
7. A device according to claim 6, characterized in that movement is transmitted to the bridge crane (11) and the carriage (14) by motors (17, 20) , controlled by the computer (3) , which operate respectively the bridge crane (11) and the said carriage (14) , which is slidably mounted in a longitudinal direction on the said bridge crane (11) .
8. A device according to claim 7, characterized in that the motors (17, 20) are of the stepping type.
9. A device according to the claims 7 or 8 , characterized in that the motors (17, 20) are controlled by means of encoders (incremental rotary transducers) (22, 23).
10. A device according to any one of the previous claims, characterized in that it is foreseen that each motor (17, 20) operates a worm screw (16, 19), acting on a nut screw (18, 21).
PCT/IT1989/000018 1988-03-31 1989-03-16 An automatic device for engraving marks and figures Ceased WO1989009140A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20063A/88 1988-03-31
IT8820063A IT1216677B (en) 1988-03-31 1988-03-31 AUTOMATIC DEVICE FOR ENGRAVING SIGNS AND FIGURES.

Publications (1)

Publication Number Publication Date
WO1989009140A1 true WO1989009140A1 (en) 1989-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1989/000018 Ceased WO1989009140A1 (en) 1988-03-31 1989-03-16 An automatic device for engraving marks and figures

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AU (1) AU3288389A (en)
IT (1) IT1216677B (en)
WO (1) WO1989009140A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655284A1 (en) * 1989-12-01 1991-06-07 Vincenzi Henri De TABLE WITH TWO ORTHOGONAL MOVEMENTS WITH COMPUTERIZED CONTROL, PARTICULARLY FOR MICROSCOPE.
US6695445B2 (en) 2001-11-13 2004-02-24 Primera Technology, Inc. Printer for large sheets of print media
CN102310700A (en) * 2011-07-14 2012-01-11 北京印钞有限公司 Carving clamp for print wheel of numbering machine
CN103231618A (en) * 2013-04-28 2013-08-07 东莞市瑞必达科技有限公司 Automatic system of engraving and milling machine and operating method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2002694A (en) * 1977-08-16 1979-02-28 Rolls Royce Mpu controlled engraving machine
FR2497974A1 (en) * 1981-01-09 1982-07-16 Cepe Controller for electronic component engraving machine - uses calculator output bus to control tracing table write head coupled to engraving head
US4561814A (en) * 1981-07-09 1985-12-31 Dahlgren Jr William V Mechanical tool manipulating method and apparatus
SE451118B (en) * 1982-07-19 1987-09-07 Sodertelje Tekniska Ide Produk Computer control for automated engraving machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2002694A (en) * 1977-08-16 1979-02-28 Rolls Royce Mpu controlled engraving machine
FR2497974A1 (en) * 1981-01-09 1982-07-16 Cepe Controller for electronic component engraving machine - uses calculator output bus to control tracing table write head coupled to engraving head
US4561814A (en) * 1981-07-09 1985-12-31 Dahlgren Jr William V Mechanical tool manipulating method and apparatus
SE451118B (en) * 1982-07-19 1987-09-07 Sodertelje Tekniska Ide Produk Computer control for automated engraving machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2655284A1 (en) * 1989-12-01 1991-06-07 Vincenzi Henri De TABLE WITH TWO ORTHOGONAL MOVEMENTS WITH COMPUTERIZED CONTROL, PARTICULARLY FOR MICROSCOPE.
WO1991008083A1 (en) * 1989-12-01 1991-06-13 Microcel Table for moving an object in two directions
US6695445B2 (en) 2001-11-13 2004-02-24 Primera Technology, Inc. Printer for large sheets of print media
CN102310700A (en) * 2011-07-14 2012-01-11 北京印钞有限公司 Carving clamp for print wheel of numbering machine
CN102310700B (en) * 2011-07-14 2013-08-21 北京印钞有限公司 Engraving Fixture for Numbering Machine Character Wheel
CN103231618A (en) * 2013-04-28 2013-08-07 东莞市瑞必达科技有限公司 Automatic system of engraving and milling machine and operating method thereof

Also Published As

Publication number Publication date
IT8820063A0 (en) 1988-03-31
AU3288389A (en) 1989-10-16
IT1216677B (en) 1990-03-08

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