JP2857770B2 - Sander - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a polishing machine, more specifically, a polishing machine in which a region to be polished on a workpiece is specified in advance, and a grindstone is moved in this polishing region to perform polishing. It is about the machine.

[Prior art] Conventionally, as this kind of polishing machine, for example,
There is one described in 288659. In order to specify a polishing area in this polishing machine, an operator holds the vicinity of a grindstone arranged on a work, and actually moves the grindstone on the work along the outer periphery of the area to be polished. The path data of the movement of the grindstone is stored in the control circuit of the grinder. The control circuit determines an area surrounded by the path as a polishing area based on the stored path data, and moves a grindstone in the polishing area to polish the area.

[Problems to be Solved by the Invention] However, in the above-described polishing apparatus, it is necessary for an operator to move a grindstone with his / her own hand in order to store a polishing area in a control circuit. This operation had to be performed in an unnatural posture. Further, if the grindstone runs away due to some trouble while the grindstone is moved by the worker, an accident that the worker is caught between the grindstone and the work may occur.

SUMMARY OF THE INVENTION It is an object of the present invention not only to easily set a polishing area to be polished but also to perform a setting operation of a polishing area safely without an operator having to move a grindstone with his / her own hand. To provide a grinding machine that can be used.

Means for Solving the Problems The present invention corresponds to a grindstone for polishing a work, an operating means having an operating lever capable of tilting operation in an arbitrary direction, and a tilting operation of the operating lever of the operating means. Driving means for moving the grindstone and moving the grindstone with the operating lever so as to surround the area on the workpiece to be polished along the outer periphery of the area, and stores path data moved by the magnet. The gist of the invention is a polishing machine comprising: a storage unit for performing the operation; and a polishing area designating unit for designating an area surrounded by the path as a polishing area based on the path data stored in the storage unit.

[Operation] When the operation lever of the operation means is tilted and the drive means moves the grindstone along the outer periphery of the area to be polished so as to surround the area, the storage means stores the path data of the whetstone. . At the time of polishing, on the basis of the path data stored in the storage means, the polishing area specifying means specifies an area surrounded by the path as a polishing area.

As described above, the polishing area can be stored in the storage means by a simple operation of only tilting the operation handle, and at this time, the operator does not need to move the grindstone with his / her own hand.

[Embodiment] An embodiment in which the present invention is embodied in a mold polishing machine for polishing a mold will be described below with reference to the drawings.

As shown in FIG. 1, a table 2 for installing a mold W is movably provided on a base 1 of the polishing machine, and a portal frame 3 is erected around the table 2. ing. An X-direction moving body 4 is provided on the frame 3 so as to be movable in the horizontal direction. Below the X-direction moving body 4, a Y-direction moving body 5 is movable in a horizontal direction orthogonal to the X-direction moving body 4. Is provided. A Z-direction moving shaft 7 is inserted into a guide cylinder 6 provided on an upper portion of the Y-direction moving body 5 so as to be movable in a vertical direction, and a grindstone head 8 is attached to a lower end of the moving shaft 7. The grinding wheel head 8 has an air motor 9
There is provided a grindstone 10 which is rotationally driven by. The X, Y, and Z direction moving bodies 4, 5, and 7 are driven by X, Y, and Z direction driving motors 11 to 13, respectively.
Drive means are constituted by the Y-direction drive motors 11 and 12.

As shown in FIGS. 1 and 2, a control panel 14 is supported on the frame 3, and the control panel 14 has a mode selection switch for selecting a teaching process and a playback process described later.
15. A number setting switch 16 for setting the number of movements of the grindstone 10 in the playback step is provided.

The control panel 14 is connected via a cable 17 to a teaching device 18 as an operating means that can be remotely operated. The teaching device 18 is provided with an operation lever 19 capable of tilting operation within a range of 360 °, and detects a tilting direction and a tilting amount by a combined signal of the X-axis encoder 20 and the Y-axis encoder 21. I have. Further, the teaching device 18 is provided with a Z-direction movement switch 22 for moving the Z-direction movement shaft 7 in the vertical direction, and a start button 23 for starting a teaching step and a playback step described later.

As shown in FIG. 2, a central processing unit 24 (hereinafter, referred to as a CPU) as a polishing area specifying means built in the control panel 14.
The switches 15 and 16 of the control panel 14 are connected to the input side of the
22, 23 and both encoders 20, 21 are connected. Also,
On the output side of the CPU 24, the drive motors 11 to 13 in the X, Y, and Z directions are provided.
And the air motor 9 are connected to each other.
A drive and stop signal is output from the CPU 24.

Further, a read-only memory 25 (ROM) and a random access memory 26 (RAM) as storage means are connected to the CPU 24, and a program for controlling the entire grinding machine and the grinding wheel 10 in the playback process are connected to the ROM 25. The program of the movement pattern is stored, and the RAM 26 rewritably stores the path data of the grindstone 10 specified in the teaching process and the number of movements of the grindstone 10 set by the number-of-times setting switch 16.

When the Z-direction movement switch 22 of the teaching device 18 is operated, the CPU 24 drives and controls the Z-direction drive motor 13 to move the Z-direction movement shaft 7 in a direction corresponding to the operation direction of the switch 22. ing. In addition, the CPU 24 operates the X and Y axis encoders 20 and 2 by tilting the operation lever 19.
When a detection signal is input from 1, the X and Y direction drive motors 11 and 12 are drive-controlled to move the grindstone 10 at a speed according to the amount of tilt in a direction corresponding to the tilt direction of the operation lever 19. Has become. On the other hand, the CPU 24 sequentially stores the path data of the movement of the grinding wheel 10 in the RAM 26 regardless of the moving speed. Further, the CPU 24 controls the moving grinding wheel 10
Crosses any part of the path that has already passed, the area surrounded by this path is determined as the polishing area E.

When the start button 23 is pressed, the CPU 24 operates the X- and Y-direction drive motors 11 based on the data of the polishing area E stored in the RAM 26 and the movement pattern stored in the ROM 25 as described above. Drive 12 and 12
0 is moved in the polishing area E on the mold W to polish the area E. When the CPU 24 moves the grindstone 10 within the polishing area E the number of times set by the number-of-times setting switch 16, the CPU 24 stops the polishing operation.

Next, a case where the mold W is polished by the polisher configured as described above will be described.

First, a teaching process for designating the polishing area E of the mold W on the grinder will be described. As shown in FIG. 1, the mold W with the polished surface facing upward is placed on the table 2 of the grinder. By operating the operation lever 19 and the Z-direction movement switch 22 of the teaching device, the grindstone 10 is moved out of the region to be polished on the mold W (teaching start point a in FIG. 3).
To move. Thereafter, the teaching step is selected by the mode selection switch 15, and the air motor 9 is operated to depress the start button 23. Then, as shown in FIG. 3, when the operation lever 19 is appropriately tilted to move the grindstone 10 along the outer periphery of the polishing area E on the mold W, the CPU 24 sequentially stores the path data in the RAM 26. . Furthermore, as shown in FIG. 3, when the CPU 24 crosses the vicinity of the teaching start point of the path that has already passed through the grindstone 10, the CPU 24 determines the area surrounded by this path as the polishing area E, and ends the teaching step. .

As described above, the movement of the grindstone 10 on the mold W in the teaching step is all remotely controlled by the tilting lever 19. On the other hand, as described above, the tilting lever 19 can be tilted at any angle of 360 °, and moves the grindstone 10 in a direction corresponding to the tilting direction. The whetstone 10 can be easily moved.

Next, a playback step of polishing the inside of the polishing area E specified by the teaching step will be described. By operating the operation lever 19 and the Z-direction movement switch 22 of the teaching device, one side on the outer periphery of the polishing area E ( The grindstone 10 is moved to the playback start point b) in FIG. In addition,
The position may be anywhere on the outer periphery of the polishing region E. Thereafter, when the playback step is selected by the mode selection switch 15 and the start button 23 is pressed, the CPU 24 rotates the air motor 9 as shown in FIG.
When the grindstone 10 is moved from the playback start point b in accordance with the movement pattern stored in the ROM 25 and the grindstone 10 is moved to the outer circumference on the opposite side of the polishing area E, the grindstone 10 is moved again along the reverse path to the previous one. Return to playback start point b. In this case, the RO area is set so that no polishing remains in the polishing area E.
The movement pattern stored in M25 is set in consideration of the outer diameter of the grindstone 10.

The CPU 24 makes the grindstone 10 perform the above operation repeatedly,
When the number of times reaches the number set by the number-of-times setting switch 16, the playback step is terminated and the grindstone 10 is stopped. Thus, the polishing of the polishing area E of the mold W is completed.

As described above, in the grinding machine of the present embodiment, the operation lever 19 of the teaching device 18 is tilted to move the grindstone 10 along the outer periphery of the region E to be polished. Route data can be stored. In this case, the moving direction of the grindstone 10 is determined by the operation lever.
Since it corresponds to the tilt direction of 19, the grindstone 10 can be easily moved along a desired path.

In addition, since the above-described operation of the teaching device 18 can be remotely controlled, it is possible to save a worker from moving the grindstone 10 with his / her own hand. Therefore, it is not necessary to take an unnatural posture in order to move the grindstone 10, and even if the grindstone 10 runs away, there is no danger to the worker.

[Effects of the Invention] As described in detail above, according to the polishing machine of the present invention, the polishing area to be polished can be easily set, and at this time, it is necessary for the operator to move the grindstone with his / her own hand. Therefore, there is an excellent effect that the setting operation of the polishing area can be performed safely.

[Brief description of the drawings]

FIG. 1 is a front view showing a mold polishing machine of the present embodiment, FIG. 2 is a block diagram showing an electric configuration thereof, and FIG. 3 is an explanation showing a polishing area surrounded by a moving path of a grindstone in a teaching process. FIG. 4 is an explanatory view showing a polishing region which is polished by a grindstone in a playback step. 10 is a grindstone, 11 is an X-direction drive motor as drive means, 12
Is a Y-direction drive motor as a drive means, 18 is a teaching device as an operation means, 19 is an operation lever, 24 is a CPU as a polishing area designation means, 26 is a RAM as storage means, W
Denotes a mold as a workpiece, and E denotes a polishing area.

Claims (1)

(57) [Claims] A grinding wheel (10) for polishing a work (W).
Operating means (18) having an operating lever (19) capable of tilting operation in an arbitrary direction; and moving the grinding wheel (10) in response to the tilting operation of the operating lever (19) of the operating means (18). Driving means (11, 12) for moving the grindstone (10) by the operating lever (19) along the outer periphery of the area to be polished on the workpiece (W) so as to surround the area; A storage means (26) for storing path data moved by the grinding wheel (10); and, based on the path data stored in the storage means (26), designating an area surrounded by the path as a polishing area (E). A polishing machine provided with a polishing area specifying means (24).