JP2013159108A - Stamping apparatus and stamping method - Google Patents

Abstract

A stamping apparatus and a stamping method capable of easily and easily acquiring stamped images having different sizes are provided.
In a stamping apparatus for creating a stamped image of a two-dimensional symbol by controlling a stamping head to form a plurality of dot-shaped stamped marks on the surface of a workpiece, an input two-dimensional An acquisition unit that acquires a size of a frame indicating a drawing area when the image data of the symbol is engraved, a size and number of cells constituting the input two-dimensional symbol, and a frame size acquired by the acquisition unit Calculation means for calculating the resolution of the stamped image, stamping force determination means for determining the stamping force based on the resolution calculated by the calculator, and stamping determined by the image data and the stamping force determination means Based on the force, there is provided a stamping data creating means for controlling the stamping head and creating stamping data for creating a stamped image of a two-dimensional symbol on the surface of the workpiece.
[Selection] Figure 4

Description

  The present invention relates to a stamping apparatus and a stamping method, and more particularly to a stamping apparatus and a stamping method capable of forming a desired image on the surface of a workpiece by stamping.

  Conventionally, by forming a plurality of dotted markings on the surface of a workpiece such as a metal material such as gold, platinum, brass, aluminum, and stainless steel, which are relatively easily plastically deformed, and a resin material such as acrylic, For example, a stamping apparatus that forms a desired image such as a photographic image or a two-dimensional symbol is known.

  The two-dimensional symbol includes, for example, a two-dimensional code in which squares called cells are arranged in a matrix, and specifically includes a QR code (registered trademark) and a data matrix.

In such an engraving apparatus, a tip of a processing tool formed in a needle shape is hit against the surface of the work piece fixed to the work piece by a fixing jig, and a dot-like engraving mark is formed on the surface. Are formed.

  Here, the engraving apparatus as described above will be described in more detail with reference to FIGS.

  FIG. 1 is a perspective view schematically showing a configuration in which a part of a conventional stamping apparatus is broken, and FIG. 2 is a block diagram of a conventional stamping apparatus. ing.

  The engraving device 100 shown in FIG. 1 is connected at a rear end portion to a stationary base member 102, a rear member 121 vertically installed on the base member 102 on the rear side of the base member 102, and On the left side of the base member 102, the side member 104 </ b> L is erected vertically on the base member 102, and is connected to the rear member 121 at the rear end, and on the right side of the base member 102 on the base member 102. Side member 104R erected vertically, and upper member 122 disposed opposite to base member 102 at the upper ends of rear member 121 and side members 104L, 104R. Yes.

  Further, in the vicinity of the side members 104L and 104R, the elevating member 108 slidably disposed on the guide rails 106a and 106b disposed in the Z-axis direction of the XYZ orthogonal coordinate system, and the lower side of the elevating member 108 The slide member 112 is slidably disposed on the guide rails 110a and 110b extending in the Y-axis direction, and is slid on the guide rails 114a and 114b extended in the X-axis direction on the front side of the slide member 112. A carriage 116 that is movably disposed, a cutting head 118 disposed on the carriage 116, and a fixing jig 120 that holds the workpiece 200 fixedly on the upper surface 102 a of the base member 102. It is configured.

Note that the microcomputer 160 (see FIG. 2) is referred to for the entire operation including the movement of the elevating member 108, the slide member 112 and the carriage 116 and the operation of the engraving head 118 on the surface 200a of the workpiece 200. .) Is controlled.

  The microcomputer 160 includes a central processing unit (CPU) 162, a read only memory (ROM) 164 for storing programs for controlling the CPU 162 and various data, a storage area used as a working area for the CPU 162, and the like. And a random access memory (RAM) 166 provided with

  The microcomputer 160 also includes an external storage device (not shown) such as a hard disk, and a read / write device (not shown) for reading and writing various data into a computer-readable recording medium. Connected via output interface.

  It is assumed that various data such as data indicating an image to be engraved and a program for executing an engraving process in the engraving apparatus 100 are read into the RAM 166 in advance from an external storage device or a recording medium.

  The CPU 162 includes a stepping motor 124 that moves the elevating member 108 in the Z-axis direction, a stepping motor 128 that moves the slide member 112 in the Y-axis direction, a stepping motor 132 that moves the carriage 116 in the X-axis direction, A solenoid 180 that pushes the tool 136 downward is connected.

Further, the microcomputer 160 has a display device 168 having a screen such as a CRT or a liquid crystal panel for performing various displays based on the control of the CPU 162, and an arbitrary position on the display screen of the display device 168. An input device 170 such as a pointing device such as a mouse or a character input device such as a keyboard for inputting arbitrary characters is connected.

  The upper member 122 is provided with a stepping motor 124 whose driving is controlled by the microcomputer 160 on the lower surface, and a screw shaft in which a screw groove is formed extends along the Z-axis direction on the stepping motor 124. A Z-axis direction feed screw 126 having a shape is connected.

  The Z-axis direction feed screw 126 is rotated about the Z-axis direction by driving the stepping motor 124.

  The elevating member 108 has a Z-axis direction feed screw 126 penetrating at a substantially central portion, and a feed nut 108a is provided at a penetration portion through which the Z-axis direction feed screw 126 passes, and the feed nut 108a is provided with the Z-axis direction feed screw. 126 is screwed together. As a result, the Z-axis direction feed screw 126 is rotated by driving the stepping motor 124, and the elevating member 108 can be moved upward and downward in the Z-axis direction.

  Further, the elevating member 108 is provided with a stepping motor 128 whose driving is controlled by the microcomputer 160 at the rear end portion 108b, and a screw shaft having a thread groove formed on the stepping motor 128 is arranged in the Y-axis direction. A Y-axis direction feed screw 130 extending along is connected.

  The Y-axis direction feed screw 130 is rotated about the Y-axis direction by driving the stepping motor 128.

  The slide member 112 has a Y-axis direction feed screw 130 passing therethrough at the upper rear side, and a feed nut 112a is provided at a penetration portion through which the Y-axis direction feed screw 130 passes, and the feed nut 112a is provided with the Y-axis direction feed screw. 130 is screwed together. Accordingly, the Y-axis direction feed screw 130 is rotated by driving the stepping motor 128, and the slide member 112 can move forward and backward in the Y-axis direction.

  Further, the slide member 112 is provided with a stepping motor 132 whose drive is controlled by the microcomputer 160 on the front side on the right side, and the screw shaft in which the screw groove is formed in the stepping motor 132 in the X-axis direction. An X-axis direction feed screw 134 having a shape extending along the axis is connected.

  The X-axis direction feed screw 134 is rotated about the X-axis direction by driving the stepping motor 132.

  The carriage 116 has a side surface through which an X-axis direction feed screw 134 penetrates, and a feed nut (not shown) is provided in a through portion through which the X-axis direction feed screw 134 penetrates. A screw 134 is screwed. Thus, the X-axis direction feed screw 134 is rotated by driving the stepping motor 132, and the carriage 116 can move to the right side and the lower side in the X-axis direction.

Accordingly, the carriage 116 can be moved in a three-dimensional direction by the stepping motors 124, 128, and 132 that are driven by the control of the microcomputer 160.

  The cutting head 118 includes a processing tool 136 and a holder 138, and the processing tool 136 for forming a stamping mark having a predetermined depth on the surface 200a of the workpiece 200 can be attached to and detached from the holder 138. The machining tool 136 is vibrated in the Z-axis direction.

  Specifically, the stamping head 118 includes a solenoid 180 and a spring (not shown) in the holder 138.

  The solenoid 180 is a cylindrical electromagnetic functional component that converts electrical energy into a linear motion, and pushes the processing tool 136 disposed in the cylinder downward when energized. The solenoid 180 is driven by a microcomputer 160 (see FIG. 2).

  Further, a spring (not shown) pushes back the machining tool 136 pushed out by the solenoid 180 upward.

  That is, the engraving head 118 causes the machining tool 136 to protrude downward by energizing the solenoid 180 under the control of the microcomputer 160, and cancels energization of the solenoid and biasing force of a spring (not shown). Thus, the machining tool 136 is retracted upward.

  The punching force is changed by controlling the microcomputer 160, for example, by changing the voltage value when the solenoid 180 is energized. By changing such an engraving force, the diameter of the engraving trace can be changed.

  Here, for example, when an image having more than two gradations such as a photographic image is imprinted, an imprint mark is formed on the surface 200a of the workpiece 200 based on pre-input image data. However, for a portion that needs to be expressed with different gradations such as shading, an image by embossing is created by changing the diameter of the embossing mark according to the degree of shading. On the other hand, for example, when a two-tone image such as a two-dimensional symbol is imprinted, an imprint mark having the same diameter is formed on the surface 200a of the workpiece 200 based on pre-input image data. Then, an image of a two-dimensional symbol is formed.

  The processing tool 136 is made of a material whose tip is harder than the workpiece 200, for example, cemented carbide or artificial diamond.

  Further, an image formed by a plurality of marking marks by the processing tool 136 is projected onto the surface 200 a of the workpiece 200 fixed by the fixing jig 120 on the upper front surface of the marking head 118. An optical sensor 150 that displays the center position is provided.

Although not shown, the fixing jig 120 has a configuration capable of finely adjusting the fixing position of the fixed workpiece 200 in the X-axis direction and the Y-axis direction.

  With this configuration, in order to form, for example, a two-dimensional symbol on the surface 200a of the workpiece 200 by the engraving apparatus 100, first, the workpiece 200 for forming the two-dimensional symbol on the surface 200a is attached to the fixing jig 120. Fix it.

  Thereafter, under the control of the microcomputer 160, the stamping head 118 is moved to a stamping position when the stamping head 118 stamps the surface 200 a of the workpiece 200.

  Then, the workpiece 200 fixed to the fixing jig 120 is fixed so that the light emitted from the optical sensor 150 is positioned at the center position of the region where an image is to be formed on the surface 200a of the workpiece 200. Fine-tune the position.

  Next, an image (hereinafter referred to as “created by stamping”) created by stamping force on the surface 200a of the workpiece 200 by the machining tool 136 or by actually stamping on the surface 200a of the workpiece 200 by the machining tool 136. The “image to be performed” is simply referred to as “stamped image”).

  Then, based on the image data representing the two-dimensional symbol inputted in advance in the microcomputer 160 and the set punching force, the stamping process for controlling the stamping process on the surface 200a of the workpiece 200 by the stamping head 118 is controlled. Create stamping data.

  Then, when the operator gives an instruction to create an image, the microcomputer 160 controls the embossing head 118 based on the engraving data, and engraves the surface 200a of the workpiece 200, An image of a two-dimensional symbol is created on the surface 200a.

  In addition, when creating a two-dimensional symbol with a larger size, data of an image to be imprinted on the surface 200a of the workpiece 200 displayed on the display device 168 (hereinafter referred to as “implanted on the surface 200a of the workpiece 200”). The image data to be engraved "is simply referred to as" image data ").

  Specifically, in the display device 168, the size of an area where image data is displayed by a pointing device such as a mouse is adjusted, or the size of an area where image data is displayed is input by a character input device such as a keyboard. Thus, the size of the image data is enlarged.

Then, when the image data is enlarged, the embossing force is kept as it is, and the imprint data is created in the microcomputer 160 based on the enlarged image data, and the large-sized two-dimensional symbol is created based on the imprint data. I was trying to create a stamped image.

  However, in the conventional stamping apparatus 100, when creating a two-dimensional symbol of a large size, even if the image data is enlarged, stamping data is created without changing the stamping force. When an image is created, it is not an optimum stamping force, but a stamping force smaller than the stamped image size (see FIG. 3).

  The optimal punching force is a punching force that can efficiently and clearly create a stamped image at that size. The larger the size, the greater the optimal stamping force. is there.

As a result, it has been pointed out as a problem that the number of times of stamping increases when creating a stamped image, and it takes time to create the stamped image.

  Note that the prior art that the applicant of the present application knows at the time of filing a patent application is not an invention related to a known literature invention, and therefore there is no prior art document information to be described in the present specification.

  The present invention has been made in view of the various problems of the conventional techniques as described above, and the object of the present invention is to easily and time-consuming engraved images of different sizes. An object of the present invention is to provide a stamping apparatus and a stamping method that can be obtained without any problem.

  In order to achieve the above object, a stamping apparatus according to the present invention controls a stamping head to form a plurality of dot-shaped stamped marks on the surface of a workpiece, thereby forming a stamped image of a two-dimensional symbol. In an engraving apparatus to be created, acquisition means for acquiring a size of a frame indicating a drawing area when imprinting image data of an input two-dimensional symbol, and the size and number of cells constituting the input two-dimensional symbol And a calculating means for calculating the resolution of the stamped image based on the size of the frame acquired by the acquiring means, and a stamping force determining means for determining the stamping force based on the resolution calculated by the calculating means. And a stamp for creating a stamped image of a two-dimensional symbol on the surface of the workpiece by controlling the stamping head based on the image data and the stamping force determined by the stamping force determining means. Create time data It is obtained so as to have a time stamped data generating means for.

  The stamping device according to the present invention further includes a setting unit that sets the material of the workpiece in the stamping device described above, and the stamping force determination unit has a resolution calculated by the calculator. The stamping force is determined based on the material of the workpiece set by the setting means.

  Further, the engraving apparatus according to the present invention is such that, in the above-described engraving apparatus, the engraving force determining means reduces the engraving force when the resolution calculated by the calculating means is larger than a preset threshold value. However, when the threshold value is smaller than the preset threshold value, the punching force is increased.

  Further, the stamping method according to the present invention is a stamping method for creating a stamped image of a two-dimensional symbol by controlling a stamping head to form a plurality of dot-shaped stamped marks on the surface of a workpiece. An acquisition step of acquiring a size of a frame indicating a drawing area when the image data of the input two-dimensional symbol is engraved, a size and number of cells constituting the input two-dimensional symbol, and the acquisition step A calculation step of calculating the resolution of the stamped image based on the acquired size of the frame, a stamping force determination step of determining a stamping force based on the resolution calculated in the calculation step, the image data, and Based on the punching force determined in the punching force determination step, the punching head is controlled to create stamping data for creating a stamped image of a two-dimensional symbol on the surface of the workpiece. Time data creation process It is obtained by way.

  The stamping method according to the present invention further includes a setting step for setting the material of the workpiece in the stamping method described above, and the stamping force determination step includes a resolution calculated in the calculation step. The stamping force is determined based on the material of the workpiece set in the setting step.

  Further, the stamping method according to the present invention is the stamping method described above, wherein, in the stamping force determination step, the stamping force is reduced when the resolution calculated in the calculation step is larger than a preset threshold value. When the threshold value is smaller than the preset threshold value, the punching force is increased.

  Since the present invention is configured as described above, there is an excellent effect that it is possible to easily obtain stamped images having different sizes without taking time.

FIG. 1 is a schematic configuration perspective view showing a state in which a part of a conventional stamping apparatus is broken. FIG. 2 is a block diagram illustrating a conventional marking apparatus. FIG. 3 is an explanatory diagram showing a stamped image of a two-dimensional symbol and a stamped image of a two-dimensional symbol having a size larger than the stamped image. FIG. 4 is a block diagram for explaining the engraving apparatus according to the present invention. FIG. 5A is an explanatory diagram showing a setting window when setting the cell size and the number of cells, and FIG. 5B is an explanatory diagram for explaining the cell size. FIG. 5C is an explanatory diagram for explaining the number of cells. FIG. 6A is an explanatory diagram showing image data indicating a two-dimensional symbol and a drawing area when the image data is engraved, and FIG. 6B shows a frame width and height, an image It is explanatory drawing which shows the number of cells of data. FIG. 7 is a flowchart showing the detailed processing contents of the stamping process by the stamping apparatus of the present invention. FIG. 8 is image data displayed on the display device, FIG. 8A is an explanatory diagram showing a state in which the image data is to be reduced and displayed, and FIG. 8B is image data. It is explanatory drawing which shows the state which was going to carry out enlarged display. FIG. 9 is a stamping force distribution table showing the stamping force determined by the material and resolution of the workpiece.

  Hereinafter, an example of an embodiment of a stamping apparatus and a stamping method according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description, components that are the same as or equivalent to those of the conventional stamping device described with reference to FIGS. 1 to 3 are indicated by using the same reference numerals as those used above. The detailed configuration and description of the function and effect will be omitted as appropriate.

  Here, FIG. 4 shows a block diagram for explaining the engraving apparatus according to the present invention.

  The marking device 10 shown in FIG. 4 is provided with a CPU 12 including a size information acquisition unit 16, a marking force determination unit 18, a marking data creation unit 20, and a resolution calculation unit 28 instead of the CPU 162. In addition, instead of the RAM 166, a RAM 22 having a setting information storage unit 24 and an engraving data storage unit 26 is provided, which is different from the engraving apparatus 100 described above.

  More specifically, the size information acquisition unit 16 acquires size information of a frame (described later) formed around the size of the image data displayed on the display device 168.

  In addition, the marking force determination unit 18 creates a stamping force distribution table based on the threshold value of resolution at which the marking force is changed in the setting information stored in the setting information storage unit 24, and the resolution calculation unit 28. The stamping force is determined from the stamping force distribution table based on the resolution calculated in step S3 and the set material of the workpiece 200.

  The threshold value of resolution at which the stamping force is changed is a limit value for changing the stamping force based on the resolution.

  The stamp data creating unit 20 creates stamp data based on the setting information stored in the setting information storage unit 24 and the stamping force determined by the stamping force determining unit 18.

  The setting information storage unit 24 stores setting information set by the operator, such as a cell size, the number of cells, a material of the workpiece 200, and a threshold of resolution at which the punching force is changed.

  The cell size represents the size of one cell constituting a two-dimensional symbol by the number of dots that are imprinted marks, and is represented by the number of dots in the vertical and horizontal directions forming the cell ( (See FIGS. 5 (a) and 5 (b)). The number of cells expresses the total number of cells constituting the two-dimensional symbol, and is represented by the number of vertical cells forming the two-dimensional symbol × the number of cells in the horizontal direction (FIG. 5A). (See (c)).

  Further, the stamp data storage unit 26 stores the stamp data created by the stamp data creating unit 20.

The resolution calculation unit 28 calculates the resolution of the stamped image according to the size of the frame formed around the image data displayed on the display device 168.

  In order to calculate the resolution for the image data, the resolution calculation unit 28 first calculates the number of steps based on the size of the frame formed around the image data. This step is a value indicating how many times the moving amount is the minimum resolution of the marking device 10, and by calculating the number of steps, it is calculated how many mm the moving amount per time is. Is. At this time, the movement amount is a stamping interval, that is, the interval between adjacent stamping marks, and the minimum resolution of the stamping device 10 is the minimum stamping interval that can be stamped by the stamping device 10.

  That is, if the step is “1”, the movement amount is the minimum resolution of the marking device 10.

  In calculating the number of steps, the vertical and horizontal magnifications of the image data are calculated using the integer part of the width and height of the frame and the number of cells so that the image data fits in the frame (see FIG. (Refer to 6 (a) and (b).) Thereafter, the number of steps is calculated based on the calculated magnification.

  Specifically, first, the horizontal magnification of the image data is acquired from the width of the frame, and the vertical magnification of the image data is acquired from the height of the frame. The horizontal magnification and the vertical magnification of the image data are calculated by the following equations.

  Horizontal scale factor = integer part of frame width value / number of horizontal cells

  Vertical scale factor = integer part of frame height value / number of vertical cells

  For example, if the frame width is 5.5 mm, the frame height is 3.5 mm, and the number of cells (vertical × horizontal) is 14 × 14, the vertical magnification of the image data is 3.0 / 14 = 0.124 · The horizontal magnification of the image data is 5.0 / 14 = 0.357.

  The vertical and horizontal magnifications calculated in this way are compared, and if the vertical magnification is smaller than the horizontal magnification, the number of steps is calculated by the following equation.

  Number of steps = [(width of frame × 1000 × 10) / (number of cells (horizontal) × minimum resolution of engraving apparatus 10 × cell size)] / 10

  Further, the calculated vertical magnification and horizontal magnification are compared, and when the vertical magnification is smaller than the horizontal magnification, the number of steps is calculated by the following equation.

  Number of steps = [(frame height × 1000 × 10) / (number of cells (vertical) × minimum resolution of engraving apparatus 10 × cell size)] / 10

  The minimum resolution of such an engraving apparatus 10 is preset, for example, 0.024 mm.

  It should be noted that the value calculated by the above formula is rounded down to obtain only the integer part as the number of steps.

  The number of steps calculated in this way falls within the range of “1-10”. When the minimum resolution of the stamping apparatus 10 is 0.024 mm, when the number of steps is “1”, the amount of movement at one time is 0.024 mm.

  Once the number of steps is calculated in this way, the resolution calculation unit 28 corrects the calculated step.

  Specifically, first, the vertical size and horizontal size of the image data are calculated by the following equations.

  Vertical size = number of cells (vertical) × number of steps × cell size × minimum resolution of the marking device 10

  Horizontal size = number of cells (horizontal) × number of steps × cell size × minimum resolution of the marking device 10

  Using the above calculation formula, the number of steps is incremented and “image data size <frame size” (that is, “vertical size <frame height and horizontal size <frame width”). ) Is determined.

  When the maximum number of steps is determined, the resolution is calculated by the following equation.

  Resolution = 25.4 / (maximum number of steps × minimum resolution of the marking device 10)

In this way, the resolution calculation unit 28 calculates the resolution of the stamped image based on the frame size.

  In the above configuration, a case where a stamped image of a two-dimensional symbol is created on the surface 200a of the workpiece 200 by the stamping device 10 according to the present invention will be described with reference to FIGS. .

  In the stamping process for creating a stamped image of a two-dimensional symbol on the surface 200a of the workpiece 200 using the stamping apparatus 10, first, the workpiece 200 is fixed to the fixing jig 120 (step S702). . At this time, the fixed position is adjusted so that the light emitted from the optical sensor 150 is positioned at the center position of the region where the engraved image is to be formed on the surface 200a.

  Next, image data indicating a two-dimensional symbol shape created on the surface 200a of the workpiece 200 is input to the microcomputer 160 (step S704).

  When image data is input to the microcomputer 160, the input image data is displayed on the display device 168.

  After that, the worker changes the size of the image data displayed on the display device 168, or stamps data such as the cell size, the number of cells, the material of the workpiece 200, and the threshold of resolution at which the stamping force is changed. Various settings necessary for creating the file are performed (step S706). The information set in this way is output to and stored in the setting information storage unit 24.

  Specifically, a frame formed around the image data displayed on the display device 168 is enlarged or reduced by a pointing device such as a mouse (see FIGS. 8A and 8B). The size of the image data displayed in the frame is changed.

  When the size of the image data is changed by changing the size of the frame, the width and height of the frame are acquired by the size information acquisition unit 16 as the size of the frame.

  In addition, as shown in FIG. 5A, the cell size and the number of cells are displayed in a setting window 50 and numerical values are input by a character input device or the like.

  That is, the cell size is input to the cell size input box 52 of the setting window 50, the number of vertical cells for forming the image data is input to the cell number input box 54, and the image data is formed to the cell number input box 56. Enter the number of cells in the horizontal direction.

  Furthermore, when the threshold value of the resolution at which the punching force is changed is set so as to divide the punching force for the resolution into four regions, the punching force as shown in FIG. A distribution table is created.

  Specifically, when the resolution is “529 or more”, the stamping force is “220” for aluminum and brass, and the stamping force is “250” for stainless steel and acrylic resin.

  When the resolution is “353”, the stamping force is “320” for aluminum and brass, and the stamping force is “400” for stainless steel and acrylic resin.

  Further, when the resolution is “265”, the stamping force is “420” for aluminum and brass, and the stamping force is “500” for stainless steel and acrylic resin.

  Furthermore, when the resolution is “212 or less”, the stamping force is “520” for aluminum and brass, and the stamping force is “600” for stainless steel and acrylic resin.

  The stamping force is set and stored in advance.

  The stamping device 10 is configured to stamp and surround the workpiece 200 made of four materials of aluminum, brass, stainless steel, and acrylic resin. Among the four materials that can be stamped, The operator selects the appropriate material.

  When various settings are completed in the process of step S706, the resolution calculation unit 28 calculates the resolution from the frame size, the number of cells, the cell size, the minimum resolution of the stamping apparatus 10 and the like (step S708) to determine the stamping force. In the part 18, the stamping force is determined from the stamping force distribution table based on the calculated resolution and the material of the workpiece 200 (step S710). The stamping force determined in this way is output to and stored in the setting information storage unit 24.

  That is, in the processing of step S710, it is determined which region in the punching force distribution table the calculated resolution corresponds to, and what is the material of the set workpiece 200, and the punching force distribution table is determined. The stamping force is determined from the stamping force distribution table.

  Thereafter, the determined striking force is output to and stored in the setting information storage unit 24, and the striking force is set based on the setting information and the striking force set in step S706 stored in the setting information storage unit 24. The stamp data creating unit 20 creates stamp data (step S712).

The created stamped data is output to and stored in the stamped data storage unit 26, and a stamped image is created based on the stamped data according to an instruction for image creation by the operator (step S714). Exit.

  As described above, the engraving apparatus 10 according to the present invention changes the size of the image data by changing the size of the frame formed around the image data, and based on the size of the frame, the image The resolution of the stamped image based on the data was calculated.

  Further, the stamping apparatus 10 according to the present invention sets a threshold value of resolution at which the stamping force is changed, and creates a stamping force distribution table based on the setting.

  The stamping apparatus 10 according to the present invention determines the stamping force from the created stamping force distribution table based on the calculated resolution and the set material of the workpiece 200.

  Thereby, in the stamping apparatus 10 according to the present invention, the operator can automatically determine the stamping force that is optimal for the enlarged or reduced image data by enlarging or reducing the image data.

  For this reason, in the stamping apparatus 10 according to the present invention, it is possible to suppress the occurrence of problems such as the spacing between adjacent stamping marks being widened or the adjacent stamping marks being overlapped due to a calculation error of the stamping force. Can do.

Furthermore, in the stamping apparatus 10 according to the present invention, even a worker who is not familiar with the handling of the stamping apparatus 10 can easily create a stamped image such as a two-dimensional symbol.

  The embodiment described above may be modified as shown in the following (1) to (3).

  (1) In the above-described embodiment, the material of the workpiece 200 is selected from four materials such as aluminum, brass, stainless steel, and acrylic resin, but it is of course not limited thereto. Other materials that can be engraved may be selected.

  Furthermore, instead of selecting the material name that can be engraved and determining the engraving force, for example, the material of the workpiece 200 is divided into a plurality of levels according to the hardness of the workpiece 200, and the material is separated from the plurality of levels. The stamping force may be determined by selecting a level corresponding to the hardness of the workpiece 200.

  (2) In the above-described embodiment, the resolution threshold value is determined so as to be divided into four regions. However, the threshold value is not limited to this, and of course, two, three, or five or more You may make it set the threshold value of the resolution from which the striking force is changed so that it may be divided into regions.

  (3) You may make it combine suitably the embodiment shown above and the modification shown in said (1) thru | or (2).

  The present invention is suitable for use in a stamping apparatus that forms a predetermined image by stamping a workpiece such as metal.

  10, 100 stamping device, 16 size information acquisition unit, 18 stamping force determination unit, 20 stamping data creation unit, 24 setting information storage unit, 26 stamping data storage unit, 28 resolution calculation unit, 200 workpiece

Claims (6)

In a stamping device that creates a stamped image of a two-dimensional symbol by controlling a stamping head and forming a plurality of dot-shaped stamped marks on the surface of a workpiece,
An acquisition means for acquiring a size of a frame indicating a drawing area when the image data of the input two-dimensional symbol is engraved;
Calculation means for calculating the resolution of the stamped image based on the size and number of cells constituting the input two-dimensional symbol and the size of the frame acquired by the acquisition means;
A striking force determining means for determining a striking force based on the resolution calculated by the calculating means;
Stamp data for creating a stamped image of a two-dimensional symbol on the surface of the workpiece by controlling the stamping head based on the image data and the stamping force determined by the stamping force determining means. An engraving device for producing engraving data. The stamping device according to claim 1, further comprising:
Setting means for setting the material of the workpiece,
The stamping force determining means determines the stamping force based on the resolution calculated by the calculating means and the material of the workpiece set by the setting means. The stamping apparatus according to claim 1, wherein:
The striking force determining means reduces the striking force when the resolution calculated by the calculating means is larger than a preset threshold value, and increases the striking force when the resolution is smaller than a preset threshold value. Characteristic marking device. In a stamping method for creating a stamped image of a two-dimensional symbol by controlling a stamping head and forming a plurality of dot-shaped stamped marks on the surface of a workpiece,
An obtaining step of obtaining a size of a frame indicating a drawing area when the image data of the input two-dimensional symbol is engraved;
Based on the size and number of cells constituting the input two-dimensional symbol and the size of the frame acquired in the acquisition step, a calculation step of calculating the resolution of the stamped image;
A stamping force determination step of determining a stamping force based on the resolution calculated in the calculation step;
Stamp data for creating a stamp image of a two-dimensional symbol on the surface of the workpiece by controlling the stamp head based on the image data and the stamp force determined in the stamp force determining step. An engraving method for producing an engraving data. The stamping method according to claim 4, further comprising:
A setting step for setting the material of the workpiece,
In the punching force determination step, the punching force is determined based on the resolution calculated in the calculation step and the material of the workpiece set in the setting step. The stamping method according to any one of claims 4 and 5,
In the punching force determination step, the punching force is decreased when the resolution calculated in the calculation step is larger than a preset threshold value, and when the resolution is smaller than the preset threshold value, the punching force is increased. A stamping method characterized by that.