JP5072743B2 - Micromachine and micromilling machine - Google Patents

Description

  The present invention relates to a micromachine and a micromilling machine having a base plate having a size of about A4.

Conventionally, a micro precision CNC lathe that performs control of the Z axis, the X axis, etc. on a PC screen connected to a PC is used for micro parts and precision turning.

However, with such ultra-compact precision CNC lathes, the tool length between the workpiece and the tip of the blade is measured by a microscope, a reference point contact method or a reference point difference input method, and all of them are contact types using limit switches. It was not automated.
For this reason, there is a drawback that contact stress is applied to the workpiece, and there is a risk that the workpiece may be scratched, deformed, or damaged. was there.
nothing special

    In view of the above-described conventional drawbacks, the present invention provides a micromachine and a micromilling machine that are small in size, have few failures, and are inexpensive, which can automatically measure the distance between a workpiece that has returned to its original position in a non-contact manner. It is intended to provide.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

To achieve the above object, the present invention provides a base plate, and a work support base provided with a chuck for supporting a work attached to the base plate so as to be movable in the Z-axis or X-axis direction by a servo motor, An origin return means of a workpiece support base using an origin return sensor for returning the workpiece support base to the origin, and a cutter that supports a cutter attached to the base plate so as to be movable by a servo motor in the X-axis or Z-axis direction. The tool support base is returned to the origin by means of a support base and an origin return sensor that returns the tool support base to the origin, and the tool support base is located at the origin by the origin return means of the tool support base, and the workpiece support At the place where the workpiece support is positioned at the origin by the origin return means of the platform, it is supported by the workpiece origin supported by the chuck of the workpiece support platform and the tool support platform. It is set in advance by a measuring device using a CCD camera provided via an arm on the base plate and a measurement value measured by the measuring device, which measures a horizontal distance between the tip of the cutting tool. A micromachine is constituted by a computer equipped with processing software for controlling the drive of a servo motor that moves the workpiece support table and the blade support table so as to obtain a workpiece having a specified dimension.

The present invention includes a base plate, a work support base provided with a chuck for supporting a work attached to the base plate so as to be movable in the Z-axis or X-axis direction by a servo motor, and the work support base is returned to the origin. An origin return means for a workpiece support base using an origin return sensor, a support base attached to the base plate so as to be movable by a servo motor in the X-axis or Z-axis direction, and an origin for returning the support base to the origin An origin return means for a support base using a return sensor, a tool support base for supporting a tool attached to the support base so as to be movable by a servo motor in the Y-axis direction, and an origin for returning the tool support base to the origin Tool return means for tool support using return sensor, origin return means for this tool support, origin return means for support base, and origin return means for work support base The horizontal direction between the tip of the tool supported by the tool support base and the origin of the work supported by the chuck of the work support base when the holding base, the support base and the work support base are located at the origin. By measuring the distance in the vertical direction using a horizontal and vertical CCD camera provided on the base plate via an arm, and the measured values in the horizontal and vertical directions measured by this measuring apparatus, A micro milling machine is configured by the tool support base, a computer having processing software for controlling the drive of the servo motor that moves the work support base so that the workpiece has a preset specified dimension.

  As is clear from the above description, the present invention has the following effects.

(1) The distance between the workpiece and the tip of the blade can be easily measured in a non-contact manner without applying contact stress to the workpiece or scratching, deforming, or damaging the workpiece.
Therefore, even with a small micromachine, the CCD camera is small and can be easily installed at low cost.

(2) According to the above (1), the distance between the workpiece and the tip of the blade is measured by the CCD camera, so that the workpiece can be measured more accurately in a shorter time than the conventional one using a gaze or microscope. Can be processed.

(3) According to the above (2), it is possible to efficiently process a workpiece with few defective products, and to reduce the machining cost of the workpiece.

(4) According to the above (1), the work support base and the tool post can be returned to the origin without contact.
Therefore, it is excellent in durability and can return to the origin accurately.

(5) Claim 2 can measure the dimension of the processed workpiece.
Therefore, it is possible to know whether or not the processing is accurately performed.

(6) Claim 3 can machine a workpiece more accurately.

(7) In the fourth aspect, the same effects as in the above (1) to (4) can be obtained.

  Hereinafter, the present invention will be described in detail with reference to the best mode for carrying out the invention shown in the drawings.

  In the first preferred embodiment for carrying out the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes a micromachine according to the present invention. The micromachine 1 includes a micromachine main body 2 having, for example, an A4 size, and the micromachine main body. 2 and a computer 3 having a display such as a notebook PC as a driving device driven by processing software via a control panel 4.

As shown in FIGS. 2 to 4, the micromachine main body 2 includes, for example, a base plate 5 having an A4 size, Z-axis guide rails 6 and 6 fixed to the base plate 5 in the Z-axis direction, and the Z-axis guide rails 6 and 6. A Z-axis table 7 that reciprocates in the Z-axis direction along the axis guide rails 6, 6, a blade support base 9 to which a cutting tool 8 such as a cutting tool or a drill fixed to the Z-axis table 7 is attached, and the Z-axis The table 7 is reciprocally moved in the Z-axis direction. A feed screw 11 screwed with a nut 10 fixed to the bottom surface of the Z-axis table 7 is rotated forward / reversely via a coupling 12 and fixed to the base plate 5. When the Z-axis servo motor 13 driven by the processing software of the computer 3 such as the notebook PC and the Z-axis table 7 are located at the origin position, the sensor signal is transmitted to the computer 3 such as the notebook PC. A Z-axis origin return sensor provided with a light shielding plate 14 fixed to the Z-axis table 7 and a light emitting element 15 and a light receiving element 16 fixed to the base plate 5 so as to enter the light shielding plate 14. 17 Z-axis origin return means 18, X-axis guide rails 19 and 19 fixed to the base plate 5 in the X-axis direction, and reciprocating movement along the X-axis guide rails 19 and 19 in the X-axis direction A workpiece that supports a workpiece driving device 24 that includes an X-axis table 20 and a chuck 22 that supports a workpiece 21 fixed to the X-axis table 20 and that is driven by processing software of the computer 3 such as the notebook PC. A support screw 25 and a feed screw 27 screwed with a nut 26 fixed to the bottom surface of the X-axis table 20 for reciprocating the X-axis table 20 in the X-axis direction. To forward and reverse rotation through the Ppuringu 28, the X-axis servo motor 29 for driving the machining software computer 3, such as the notebook PC, which is fixed to the base plate 5, the X-axis table 20 is positioned at the home position A light-shielding plate 30 fixed to the X-axis table 20 for outputting a sensor signal to the computer 3 such as the notebook PC, and a light-emitting element 31 and a light-receiving element fixed so that the light-shielding plate 30 enters the base plate 5 32, an X-axis origin return means 34 comprising an X-axis origin return sensor 33, and a tip end portion of the cutter 8 of the cutter support base 9 at the origin position fixed to the base plate 5 via an arm 35. The horizontal distance between the workpiece support table 25 and the workpiece 21 and the size of the workpiece can be measured, and the measurement signal is transmitted to a computer such as the notebook PC. The workpiece support 25 and the measuring device 37 using the CCD camera 36 that can be output to the encoder 3 and the workpiece with the designated dimensions set in advance by the measured value measured by the measuring device 37. It is comprised with the process software 38 which controls the drive of the servomotors 13 and 29 which move the blade support stand 9. FIG.

As an example of the operation sequence of the origin return means 18 of the blade support 9 and the origin return means 34 of the work support 25, the current position is read and the Z-axis / X-axis origin return sensor is within a predetermined distance range. 17 and 33 are moved to positions sufficiently separated from each other.
Thereafter, it is moved at a certain high speed in the direction in which the Z-axis / X-axis origin return sensors 17 and 33 are installed.
When the signals from the Z-axis / X-axis origin return sensors 17 and 33 are received, the vehicle decelerates to a stop and then moves in the opposite direction at a sufficiently low speed so that the signals from the Z-axis / X-axis origin return sensors 17 and 33 disappear. The blade support base 9 and the work support base 25 are positioned at the origins by moving to a stop and stopping.
If the Z-axis / X-axis origin return sensors 17, 33 are provided with signals (C-phase signals, etc.) that are spiked at regular intervals, the Z-axis / X-axis origin return sensors 17, 33 are provided. After the above signal disappears, the blade is moved to a position where the signal is output a predetermined number of times, stopped, and the blade support base 9 and the work support base 25 are positioned at the origin.

In the micromachine 1 having the above-described configuration, the cutting tool 38 of the computer 3 such as a notebook PC drives the Z-axis servo motor 13 of the Z-axis origin return means 18 and the cutter support table 9 at the origin by the Z-axis origin return sensor 17.
Further, the X axis servo motor 29 of the X axis origin return means 34 is driven and the X axis origin return sensor 33 is used to position the work support 25 at the origin.
Next, when the blade support base 9 and the work support base 25 are positioned at the origin, the size of the work 21 supported by the work support base 25 is measured by the CCD camera 36 of the measuring device 37 and supported by the blade support base 9. The distance in the horizontal direction between the tip of the blade 8 that has been cut and the workpiece 21 supported by the workpiece support 25 is measured, and the measured value is input to the processing software 38 of the computer 3 such as a notebook PC.
When this measured value is input to the machining software 38 of the computer 3 such as a notebook PC, the machining origin position is corrected, and the machining software 38 uses the machining software 38 to move the motor 23 of the workpiece driving device 24, the Z-axis servo motor 13 and the X-axis servo motor. 29 is driven, and the workpiece 21 is machined to a predetermined dimension with the blade 8.

In addition, when using the cutter 8 with a nose radius, you may use the measuring apparatus using the distance data table from the nose radius center to the front-end | tip part of the cutter 8 in all the angle directions in a nose circular arc.
In addition, when there is expansion / contraction due to temperature, a measuring device to which a correction value for the expansion / contraction amount is input may be used.
After processing, the dimension of the processed workpiece protruding from the processing origin is measured by the CCD camera 36, and when there is an error from the target value, a correction circuit or software in which a correction value corresponding to the error amount is input to the processing software 38 A measuring device 37 that performs correction processing according to may be used.

In the first preferred embodiment for carrying out the present invention, the blade support table 9 that moves in the Z-axis direction and the workpiece support table 25 that moves in the X-axis direction have been described. The same effect can be obtained by moving the work support base 25 in the Z-axis direction and moving the blade support base 9 in the X-axis direction.
[Different forms for carrying out the invention]

  Next, different modes for carrying out the present invention shown in FIGS. 6 to 11 will be described. In the description of these different modes for carrying out the present invention, the same components as those in the best mode for carrying out the present invention are designated by the same reference numerals and redundant description is omitted. To do.

  The second embodiment for carrying out the present invention shown in FIG. 6 is mainly different from the best first embodiment for carrying out the present invention in that a computer such as a desktop PC provided with processing software 38 is used. Even in the micromachine 1A configured as described above in that 3A is directly connected to the micromachine main body 2A, the same effects as those of the first embodiment for carrying out the present invention can be obtained.

The third embodiment for carrying out the present invention shown in FIGS. 7 to 11 is mainly different from the first embodiment for carrying out the present invention in that the Z-axis table 7 is arranged in the X-axis direction. is attached to the workpiece support table 25 to move, Y-axis the workpiece a supported workpiece 21 to the base plate 5 of the sites can be processed into the chuck 22 of the support base 25 in the Y-axis direction Y-axis guide rails 41 are fixed A table 42, a blade support base 9 to which a blade 8 that reciprocates in the Y-axis direction along the Y-axis guide rails 41, 41 of the Y-axis table 42 is attached, and the blade support base 9 reciprocates in the Y-axis direction. A computer such as a PC fixed to the Y-axis table 42 that moves and rotates the feed screw 44 screwed with the nut 43 fixed to the bottom surface of the blade support base 9 through the coupling 45. A Y-axis servo motor 46 driven by the machining software 38, a light shielding plate 47 fixed to the blade support 9 for outputting a sensor signal to the computer 3 such as a PC when the blade support 9 is located at the origin, and a Y-axis origin return means 51 consisting of Y-axis table 42 and the light emitting element 48 fixed to the light shielding plate 47 enters the light receiving element 49 and is provided Y-axis homing sensor 50., workpiece support 25, When the Z-axis table 7 and the blade support 9 are located at the origin, the vertical direction between the origin of the tip of the blade 8 supported by the blade support 9 and the workpiece 21 supported by the workpiece support 25 The measured value using the vertical CCD camera 53 provided on the base plate 5 via the arm 52 is output to the processing software 38 of the computer 3 such as a PC. And a horizontal CCD camera 36 provided on the base plate 5 via an arm 35 for measuring the horizontal distance between the origin of the cutting edge 8 and the workpiece 21. The micro milling machine 55 configured in this way is also the best for carrying out the present invention in that the measurement value is output to the processing software 38 of the computer 3 such as a PC. The same effect as the first embodiment can be obtained.

  The present invention is used in industries that manufacture micromachines and micromilling machines.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic explanatory drawing of the best 1st form for implementing this invention. The top view of the micromachine main body of the best 1st form for implementing this invention. 1 is a front view of a micromachine main body according to a first embodiment for carrying out the present invention. 1 is a side view of a micromachine main body according to a first embodiment for carrying out the present invention. FIG. 1 is a schematic block diagram of the best first embodiment for carrying out the present invention. Schematic explanatory drawing of the 2nd form for implementing this invention. Schematic explanatory drawing of the 3rd form for implementing this invention. The top view of the 3rd form for carrying out the present invention. The front view of the 3rd form for carrying out the present invention. The side view of the 3rd form for carrying out the present invention. The schematic block diagram of the 3rd form for implementing this invention.

1, 1A: Micromachine,
2, 2A: Micromachine body
3, 3A: Computer, 4: Monitor,
5: Base plate, 6: X-axis guide rail,
7: Z-axis table, 8: Cutting tool,
9: Tool support, 10: Nut,
11: Lead screw, 12: Coupling,
13: Z-axis servo motor, 14: Shading plate,
15: light emitting element, 16: light receiving element,
17: Z-axis origin return sensor, 18: Z-axis origin return means,
19: X-axis guide rail, 20: X-axis table,
21: Workpiece, 22: Chuck,
23: Motor, 24: Work drive device,
25: Work support base, 26: Nut,
27: Lead screw, 28: Coupling,
29: X-axis servo motor, 30: Shading plate,
31: Light emitting element, 32: Light receiving element,
33: X-axis origin return sensor, 34: X-axis origin return means,
35: Arm, 36: CCD camera,
37: Measuring device, 38: Processing software,
41: Y-axis guide rail, 42: Y-axis table,
43: Nut, 44: Feed screw,
45: Coupling, 46: Y-axis servo motor,
47: light shielding plate, 48: light emitting element,
49: Light receiving element, 50: Y-axis origin return sensor,
51: Y-axis origin return means, 52: Arm,
53: CCD camera for vertical use, 54: Vertical measurement device,
55: Micro milling machine.

Claims (4)

A base plate, a workpiece support base provided with a chuck for supporting a workpiece mounted on the base plate so as to be moved by a servo motor in the Z-axis or X-axis direction, and an origin return for returning the workpiece support base to the origin The origin return means of the workpiece support using a sensor, the cutter support that supports the cutter attached to the base plate so that it can be moved by the servo motor in the X-axis or Z-axis direction, and the cutter support as the origin The origin support means of the blade support using the origin return sensor to be restored, and the cutter support base is located at the origin by the origin return means of the cutter support base, and the workpiece support base is the origin by the origin return means of the workpiece support base. In the horizontal direction between the origin of the work supported by the chuck of the work support and the tip of the tool supported by the tool support. The measurement device using a CCD camera provided on the base plate via an arm for measuring separation, and the workpiece having a designated dimension set in advance by the measurement value measured by the measurement device. A micromachine comprising a computer having processing software for controlling driving of a servo motor for moving the support table and the blade support table. 2. The micromachine according to claim 1, wherein the measuring device can measure the dimension of the workpiece before processing at the origin position of the workpiece support base and can also measure the dimension of the workpiece after processing. The driving device measures the dimension of the workpiece after processing with a measuring device using a CCD camera, and if there is an error, a correction value is input according to the amount of error, and a correction circuit that moves the workpiece support and the blade support 2. The micromachine according to claim 1, further comprising a correction process by software. A base plate, a workpiece support base provided with a chuck for supporting a workpiece mounted on the base plate so as to be moved by a servo motor in the Z-axis or X-axis direction, and an origin return for returning the workpiece support base to the origin An origin return means for a workpiece support base using a sensor, a support base attached to the base plate so that it can be moved in the X-axis or Z-axis direction by a servo motor, and an origin return sensor for returning the support base to the origin. An origin return means for the used support base, a tool support base for supporting a tool attached to the support base so as to be movable in the Y-axis direction by a servo motor, and an origin return sensor for returning the tool support base to the origin. The tool support base used for the tool support base, the origin return means for the tool support base, the origin return means for the support base, and the origin return means for the work support base, The horizontal and vertical directions between the tip of the tool supported by the tool support and the origin of the work supported by the chuck of the work support are determined by positioning the holding base and the work support at the origin. The distance is measured by a measuring device using horizontal and vertical CCD cameras provided on the base plate via an arm, and the horizontal and vertical measured values measured by the measuring device. A micromilling machine comprising: a tool support base, a computer having processing software for controlling driving of a servo motor that moves the work support base and the work support base so as to obtain a work having a specified dimension.

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