JP4689499B2 - Dot marking device - Google Patents

Description

  The present invention is a dot that is incorporated as one of various tools in a tool-changeable numerically controlled machine tool, and is provided with dot marking such as a two-dimensional bar code and characters as one of the machining steps of the workpiece. -It relates to a marking device.

  There is a conventional unmanned automatic dot-type pin marking device disclosed on the website of the US Telesys. The technology installs a dedicated marking device with a large volume in an independent installation location in the subsequent process of a numerically controlled processing machine that processes the workpiece, and moves the finished product to the dedicated marking device and fixes it. It was to be engraved in the state.

Further, the pin driving mechanism in the dedicated marking device is a complicated and large mechanism that enables two-dimensional pin operation on a limited plane, and is connected to the numerically controlled machine tool by a data dedicated line and the power supply is also a numerical value. A power wiring separate from the control machine tool was provided up to the tip.
http://www.Telesis.com/

  By the way, in the above-mentioned conventional example, when the necessary data is engraved on the workpiece processed by the numerically controlled machine tool, it is removed from the jig for fixing the workpiece of the numerically controlled processing machine and installed in a completely different place. The work of moving and setting the work piece is fixed to the pin marking device jig and the pin marking device pin is driven by the data sent from the numerically controlled machine tool. And the space for installing the pin marking device is also required, and if the work piece is changed, it is necessary to change the fixing tool of the pin marking device, which is inefficient. .

  In addition, a drive mechanism for driving the pin marking device (a mechanism for moving for marking) is also required separately from the numerical control machine tool, so that the cost increases and the signal line and the power supply line are different from the numerical control machine tool. Another problem is that the installation location is restricted because the tip of the pin marking device is necessary.

  The present invention is intended to solve the above-described problems, and its object is to incorporate it as one of various tools in a tool-changeable numerically controlled machine tool as one of the machining steps of a workpiece. Dot marking such as two-dimensional barcodes and characters has been performed, eliminating the need for a dedicated machine for dot marking, reducing costs, and eliminating the need for installation space. One of them is to provide a dot marking device that can improve workability because dot marking is performed.

The dot marking device according to the present invention is intended to achieve the above-mentioned object, and the means of claim 1 can be installed in a tool magazine part which is used in a standard for a tool-changeable numerically controlled machine tool. A dot marking device configured as described above, wherein the dot marking device drives a pin for striking the surface of a workpiece by applying a dot marking with electromagnetic force, and driving the drive unit For storing the engraving data from the numerically controlled machine tool and controlling the driving means , and enabling transmission and reception of data and signals necessary for control from the numerically controlled machine tool in a non-contact state The marking control means and the marking start position detection means for outputting to the marking control means that the driving means is at the marking start position.

According to a second aspect of the present invention, in the first aspect, the engraving start position detecting unit is configured such that the driving unit is moved to a predetermined position of the engraving start position and the pin is in contact with the workpiece. It is a sensor which detects this.

According to a third aspect of the present invention, in the first aspect described above, the movement for marking on the workpiece by the driving means is performed by the numerically controlled machine tool.

According to a fourth aspect of the present invention, in the first aspect, the power source is a secondary battery, and the charging unit that performs charging at a standby position before starting dot marking in the numerically controlled machine tool is a numerically controlled machine. It is provided on the machine side.

According to a fifth aspect of the present invention, in the above-described fourth aspect , the secondary battery is charged by an inductive power from an external power source.

  As described above, the present invention employs a device for marking a workpiece with a two-dimensional bar code, characters, etc. as one of the tools of a tool-changeable numerically controlled machine tool. Since the stamping is performed as a part of the processing, it is possible to perform the processing and stamping of the workpiece in one numerically controlled machine tool, and it is possible to shorten the time until the stamping and no space for the stamping.

  In addition, since the transfer of stamped data from numerically controlled machine tools is captured and stored in a non-contact manner, data can be captured easily and reliably, and there is no risk of contact failure or failure such as connection with a connector. .

  Furthermore, since the driving means starts driving after a predetermined time by detecting the contact of the pin to be engraved with the workpiece as the marking start position detecting means, numerical control can be performed without the need for wiring or the like. Matching with the machine tool can be taken and an accurate stamp can be stamped.

  Further, since the movement for marking on the workpiece by the driving means is performed by the numerically controlled machine tool, the driving means only needs to incorporate a mechanism for performing marking, and the cost can be reduced.

  Further, since the secondary battery is adopted as the power source for the driving means and the marking control means and the secondary battery is charged at the standby position before the marking start, the power to the driving means and the power to the marking control means are supplied. Since it can be reliably secured and charging is performed by inductive power from an external power supply, it can be performed in a non-contact state, so that charging can be performed easily and reliably and there is no fear of contact failure or failure such as connection with a connector It has the effect of.

  The present invention is incorporated as one of various tools in a tool-changeable numerically controlled machine tool, and is subjected to dot marking such as a two-dimensional barcode and characters as one of the machining steps of the workpiece.

Next, an embodiment of a dot marking device according to the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a known tool-changeable numerically controlled machine device, which incorporates the dot marking device of the present invention as one of the tools of the device 1. The outline of the numerically controlled machine tool will be described below with reference to FIGS.

  The tool-changeable numerically controlled machine tool 1 is a tool magazine for storing a tool 12 such as a plurality of types of cutting tools, and selects one tool 12 from the tool magazine 11 to perform the next work. In addition, a mechanism is incorporated in which the tool 12 is moved to the standby position a for returning to the tool magazine 11 when the machined tool 12 is returned to the standby position a. 1 shows a state in which the dot marking device 2 of the present invention is moving, and the machine tool 13 (described later) in FIG. 2 also holds and fixes the dot marking device 2 in the same manner. It shows the state being done.

  Reference numeral 13 denotes a machine tool including a motor for rotating the tool 12 while moving in the X-axis, Y-axis, and Z-axis directions to cut or open a hole, and 14 denotes the tool magazine 11 and the machine tool 13. When the tool changer located between them is finished, when the work on the machine tool 11 is finished, the tool 14 is rotated by 90 ° by the motor 14a, is attached to the machine tool 13 and holds the tool 12 which has finished the work, and the tool 12 in the standby position of the tool magazine 11 Is then rotated 90 ° again to move the tool 12 at the standby position a to the machine tool 13 side and return the tool 12 of the machine tool 13 to the standby position a. Reference numeral 15 denotes a workpiece.

  In the known numerically controlled machine tool configured as described above, when the workpiece 15 is set and the start button is pressed, the tool changer 14 is driven by numerical control stored in the numerical control computer 16 in advance, and the tool is Since a predetermined tool 12 has been moved from the magazine 11 to the standby position a, the tool 12 is gripped and moved to the machine tool 13 side to be gripped by the machine tool 13, and the machine tool 13 is commanded by a command from the numerical control computer. The machine 13 is controlled to perform work such as cutting of the workpiece 15. Hereinafter, the workpiece 15 is processed by exchanging the tool 12 according to a command from the numerical control computer.

  The dot marking device of the present invention is set in the tool magazine 11 as one of the tools of such an exchange-type numerically controlled machine tool, and is subjected to dot marking after the workpiece has been processed. . Hereinafter, a specific configuration will be described.

  Reference numeral 2 denotes a marking tool according to the present invention, and a holding part 21 a to be held by the tool changer 14 and an attachment part 21 b to be attached to the machine tool 13 are attached to the casing 21. The casing 21 accommodates a secondary battery 22, a drive board 23 for driving a dot stamper 25 to be described later, and a control board 24 for receiving and storing control signals from the numerical control computer 16. Has been.

  The dot marking machine 25 includes a coil 25a, a marking pin 25b made of a magnetic material movably inserted in the hollow of the coil 25a, and the marking pin 25b fixed to the upper end of the coil 25a. And a marking detection sensor 25c such as a proximity switch.

  The marking detection sensor 25c reaches a standby position for starting marking, and the marking tool 2 is moved by the machine tool 13 from a state in which the marking pin 25b protrudes forward by the coil 25a, and the marking pin 25b is fixed in the coil 25a. The stamping operation is started after a predetermined time has passed from the output of the stamping detection sensor 25c.

  Further, on the side surface of the casing 21, the secondary coil 22 for electric power for charging the secondary battery 22 by non-contact using inductive power and the marking data from the numerical control computer 16 are non-contacted. The data transmitter / receiver 27 to be exchanged is attached in a state of being exposed from the side surface of the casing 21. The power secondary coil 26 is connected to the secondary battery 22 via the drive board 23, and the data transceiver 27 is connected to the control board 24 and stored in the memory of the control board 24. As the data transmitter / receiver 27, a combination of a primary coil and a secondary coil (see FIG. 3), a combination of a light emitting element that emits infrared light and a light receiver that receives infrared light, or the like can be considered.

  3 is a power rail / data supply device that is attached to a numerically controlled machine tool in the vicinity of the marking tool 2 and charges the secondary battery 22 and stores the marking data in the control board 24. A movable body 32 that is slidably attached to the marking tool 2 according to a command from the numerical control computer 16, and the power 2 that is attached to the leading end of the movable body 32 and approaches the marking tool 2 side. A power primary coil 33 that supplies inductive power to the secondary coil 26 and a data transceiver 34 that supplies data to the data transceiver 27 are attached.

  A casing 35 is fixed to the movable body 32, and a power supply device 36 for moving the movable body 32 and charging the secondary battery 22 via the coils 33 and 26 is provided in the casing 35. A control board 37 connected to the numerical control computer 16 for controlling the drive control and charge control of the power supply device 35 and the start of the transmission of the data is accommodated.

Next, the operation will be described with reference to the flowcharts of FIGS.
First, when the numerical control computer 16 determines that the workpiece 15 is to be engraved with a two-dimensional bar code or product number using the dot marking device of the present invention as the next step according to a pre-recorded program, the engraving operation is performed. Is started (step S1).

  When the command is issued, the marking tool 2 is selected from the tool magazine 11 in which the marking tool 2 is accommodated (step S2), and one of the tool magazines 11 in which the marking tool 2 is accommodated is moved to a standby position (step S2). Step S3). When the movement is completed, the numerical control computer 16 sends a command to the power / data supply device 3 to move the moving body 32 leftward in FIG. 3, and the power primary coil 33 is changed to the power source secondary coil 26. Further, the data transmitter / receiver 34 is brought close to the data transmitter / receiver 27 (step S4), and power is supplied to the power primary coil 33 from the power supply device 35 to start charging (step S5).

  When charging is started, the circuit of the control board 24 in the engraving tool 2 starts to operate (step S6), and the degree of charging of the secondary battery is started (step S7) to monitor whether the battery is fully charged. (Step S8) and at the same time, it becomes possible to transfer the stamped data from the data transceiver 34 to the memory via the data transceiver 27 (Step S9). On the other hand, if it is determined in step S3 that the marking tool 2 has been set at the standby position a, the marking data is controlled since the marking data can be sent from the numerical control computer 16 (step S10). Storage of the substrate 24 in the memory is started (step S11), and it is monitored whether or not the marking data has been stored in the memory (step S12).

  When it is confirmed that the charging in step S8 is full and that the engraving data has been stored in the memory, a signal indicating that the charging has been completed is sent to the control board 37, and the moving body 32 is returned to the original. The power primary coil 33 and the data transceiver 34 are separated from the power secondary coil 26 and the data transceiver 27 of the marking tool 2 (step S13).

  When the moving body 32 is returned to the original standby position in step S13 described above, the numerical control computer 16 and the tool 12 that has been mounted on the machine tool 13 by the tool changer 14 so far and the stamping tool 2 at the standby position a. The exchange is started (step S14). Then, it is monitored whether or not the marking tool 2 is mounted on the machine tool 13 (step S15). If it is determined that the marking tool 2 is mounted on the machine tool 13, the tool changer 14 is returned to the original position (step S16). After that, the numerical control computer 16 moves the machine tool 13 to the marking reference position on the workpiece 15 (step S17).

  While the machine tool 13 reaches the marking reference position, the marking pin 25b accommodated in the coil by the spring (not shown) is protruded from the marking pin 25b by applying a weak current to the coil 25a. Thereafter, the protruding tip of the marking pin 25b contacts the workpiece 15 and moves against the solenoid suction force, so that the marking detection sensor 25c outputs a signal that the marking pin 25b is accommodated in the coil 25a. Then, based on the marking data stored in the memory of the control board 24 (step S18), the marking operation by the pulse signal to the coil 25a is started after a predetermined set time described below (step S19).

  On the other hand, since the time until the marking operation by the marking tool 2 is started is stored in the numerically controlled machine tool 1, the machine tool 13 is operated before the marking operation is started and the marking tool 2 is moved to the workpiece. Immediately after being brought into contact with the marking start position of 15 (step S20), the numerical control computer 16 immediately performs a constant speed repetitive moving operation for moving the machine tool 13 in the XY directions according to the program (step S21).

  At this time, in order to start the marking operation by the marking tool 2 after the acceleration / deceleration time at both ends of the repetitive operation, the machine tool 13 is accelerated on the control board 24 to a constant speed necessary for the marking operation, or after the deceleration stop. Each time required for turning back is stored.

  Thus, the marking operation of the marking pin 25b for marking stored in the memory on the marking tool 2 side, and the movement operation of the marking tool 2 via the machine tool 13 stored in the numerical control computer 16 As a result, a two-dimensional barcode, serial number, etc. are imprinted on the surface of the workpiece 15. Then, the control circuit of the control board 24 of the marking tool 2 monitors whether or not the marking operation stored in the memory in advance is finished (step S22), and the numerical control computer 16 repeats the repetitive movement stored in advance. It is monitored whether or not the operation is finished (step S23).

  If it is determined in step S22 that the marking has been completed, the output of the drive pulse signal to the coil 25a is stopped and the operation of the marking tool 2 is terminated (step S24). If it is determined in step S23 that the repetitive movement has been completed, the machine tool 13 is returned to the tool change position which is the initial position (step S25), and then the tool changer 14 is driven and attached to the machine tool 13. It is monitored whether or not the marking tool 2 and the tool 12 used for processing the next process or the next workpiece 15 are set to gripping positions (step S26).

  If it is determined that the marking tool 2 is returned to the standby position a, the tool 12 used in the next process is set on the machine tool 13 and all the operations are completed (step S27).

It is a side view of the state which incorporated the dot marking device of this invention in the exchange-type numerical control machine tool. It is a top view same as the above. It is a side view which shows the principal part of this invention. It is a flowchart for demonstrating operation | movement of this invention. It is a flowchart which shows a continuation same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Numerical control machine 11 Tool magazine 12 Tool 13 Machine tool 14 Tool changer 15 Workpiece 2 Stamping tool 21 Case 22 Secondary battery 23 Driving substrate 24 Control substrate 25 Dot stamping machine 25a Coil 25b Stamping pin 25c Stamping detection sensor 26 Secondary coil for power 27 Transmitter / receiver for data 3 Power / data supply device 31 Guide rail 32 Moving body 33 Primary coil for power 34 Transmitter / receiver for data 35 Housing 36 Power supply device 37 Control board

Claims (5)

A dot marking device constructed so that it can be installed in a tool magazine part that is used as a standard in a tool-changeable numerically controlled machine tool,
The dot marking device includes a driving means for driving a pin for performing dot marking by striking the surface of a workpiece by electromagnetic force, a power source for driving the driving means, and the numerical control machine tool. Stamping control means for storing the stamping data from above, controlling the driving means, and enabling data and signals necessary for control from the numerically controlled machine tool to be exchanged in a non-contact state, and the driving means starts marking A dot marking device comprising: a marking start position detecting means for outputting a position to the marking control means.   2. The marking start position detection means is a sensor that detects that the driving means has moved to a predetermined position of the marking start position and that the pin has come into contact with a workpiece. The dot marking device described.   2. The dot marking device according to claim 1, wherein the movement for marking the workpiece by the driving means is performed by the numerically controlled machine tool.   The power supply is a secondary battery, and charging means for charging at a standby position before starting dot marking in the numerically controlled machine tool is provided on the numerically controlled machine tool side. The dot marking device described. The dot marking device according to claim 4 , wherein the secondary battery is charged by inductive power from an external power source.

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