JPH0724547U - Polishing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a polishing apparatus in which an operator can clearly recognize the return movement of the moving table to the initial position, which is executed based on a stop signal, and can perform an appropriate operation. With the goal. [Structure] The movable table 2 on the frame 4 has a blade 10 on it.
Is fixed, and the blade 10 is ground with a rough grindstone 11K and a finishing grindstone 12K. When polishing is performed, the moving table 2 repeats reciprocating movements in the directions of arrows 92 and 93 within a predetermined polishing range. When the polishing operation is completed, the cycle stop button is pressed, and the moving table 2 returns to the initial position at the end of the rail beyond the polishing range. When performing this return movement, the LED on the operation panel blinks to indicate that the moving table 2 is moving toward the initial position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a polishing apparatus, and more particularly to a technique for displaying a stop operation when a stop display is given to a moving table.

[0002]

[Prior art]

 A conventional polishing apparatus will be described by taking the blade polishing apparatus shown in FIG. 7 as an example. A rail (not shown) is provided on the frame 69, and the moving table 60 is attached slidably in the directions of arrows 92 and 93 along the rail. The movement of the moving table 60 is controlled by a table moving motor (not shown) rotating in forward and reverse directions. A blade is placed and fixed on the moving table 60.

A rough whetstone 11K and a finishing whetstone 12K are located above the moving table 60. The rough whetstone 11K and the finishing whetstone 12K are rotated by whetstone rotation motors 11 and 12, respectively, to polish the blade on the moving table 60. The grindstone rotating motor 11 and the rough grindstone 11K, the grindstone rotating motor 12 and the finishing grindstone 12K are respectively moved up and down in the directions of arrows 90 and 91 by a grindstone lifting motor (not shown).

When performing the polishing work, it is necessary to fix the blade to the moving table 60 first. The fixing work of the cutting tool is performed at the initial position of the moving table 60. FIG. 6 is a conceptual diagram of each position of the movable table 60. The movable table 60 is positioned at the initial position R1 shown in the figure to fix the blade. The initial position R1 is the end of the rail of the moving table 60.

After fixing the blade on the moving table 60, the operator inputs a moving command. In accordance with this movement command, the table moving motor is rotated in the forward and reverse directions, and the moving table 60 reciprocates in the polishing range R2 shown in FIG. Subsequently, the worker rotates the grindstone rotation motor 11 and the rough grindstone 11K shown in FIG. 7, and lowers the grindstone rotation motor 11 and the rough grindstone 11K in the direction of arrow 90 to bring the rough grindstone 11K into contact with the blade. Since the moving table 60 reciprocates, the blade is polished over its entire length.

When the polishing with the rough whetstone 11K is completed, the rough whetstone 11K is raised in the direction of arrow 91, and then the whetstone rotation motor 12 and the finishing whetstone 12K are lowered in the direction of arrow 90. Then, similarly, while reciprocating the moving table 60, polishing with the finishing grindstone 12K is performed.

As described above, the blade is polished by the rough whetstone 11K and the finishing whetstone 12K. When the polishing operation is completed, the operator depresses the stop button and gives a stop command. Upon receiving this stop command, the moving table 60 moves toward the initial position R1 and returns to the initial position R1. Then, the work of exchanging the blade is performed here, and the next blade is polished.

The reciprocating movement of the moving table 60 in the polishing range R2 is controlled by switching the limit switch 64. A detector 63 is connected to the limit switch 64, and the detector 63 has V-shaped levers 63a and 63b as shown in FIG. On the other hand, the moving table 60 is provided with detection bars 61 and 62.

The kick portions 61F and 62F of the detection bars 61 and 62 push down the V-shaped levers 63a and 63b along with the movement of the moving table 60, whereby a signal is output from the detector 63. The output of this signal causes the moving table 60 to reciprocate in the polishing range R2.

As shown in FIG. 8, the detection bar 61 is fixed to the moving table 60 by a positioning bolt 61N. Can be moved in the directions of arrows 92 and 93. The detection bar 62 also has the same structure, and by changing the positions of the detection bars 61 and 62, the polishing range R2 in which the moving table 60 reciprocates is adjusted according to the size of the blade. it can.

[0011]

[Problems to be solved by the device]

 The conventional polishing apparatus has the following problems. When the operator presses the stop button after finishing the polishing operation as described above, the moving table 60 moves back toward the initial position R1. In this case, for example, it is assumed that the moving table 60 moves from the position shown in FIG. 6B toward the initial position R1 in the direction of arrow 93.

The moving table 60 is moving back toward the initial position R1. In the polishing range R2, is this movement as a reciprocating movement during the polishing operation, or is it returning to the initial position R1? Are indistinguishable in appearance. For this reason, other workers may again press the stop button or press another command button, for example, the lift button of the grindstone lift motor.

In particular, the moving speed of the moving table 60 is relatively low, and it is unclear whether the moving in the direction of the arrow 93 within the polishing range R2 is the moving toward the initial position R1. Is likely to operate other buttons.

Therefore, the present invention provides a polishing apparatus in which an operator can clearly recognize the return movement of the moving table to the initial position, which is executed based on the stop signal, and can perform an appropriate operation. With the goal

[0015]

[Means for Solving the Problems]

 The polishing apparatus according to the present invention includes a moving table to which a polishing object is attached, a polishing unit for polishing the polishing object attached to the moving table, and a moving table to move the polishing table so that the polishing object has a predetermined polishing range. A drive unit for reciprocally moving the drive table for receiving the stop signal to return the moving table to the initial position, and an input unit for inputting a stop command and outputting the stop signal to the drive unit. In addition, the polishing apparatus is characterized by including a stop display unit for displaying a stop display based on a stop command input to the input unit.

[0016]

[Action]

 In the polishing apparatus according to the present invention, the stop display unit displays the stop display based on the stop instruction input to the input unit.

Therefore, the operator can clearly recognize the return movement of the movement table to the initial position, which is executed based on the stop signal.

[0018]

【Example】

 An embodiment of a polishing apparatus according to the present invention will be described with reference to the drawings. The outline of the device is shown in FIG. A movable table 2 which is movable in the directions of arrows 92 and 93 is attached to the frame 4. The movable table 2 is provided with a blade mount 6, and the blade 10 which is an object to be polished is mounted and fixed on the blade mount 6. The moving table 2 is adapted to move along a rail (not shown) on the frame 4. A rack gear 7 is provided on the bottom surface of the moving table 2 as shown in the figure, and a pinion gear 24 fixed to the shaft of a feed motor 22 as a drive unit is meshed with the rack gear 7. That is, the moving table 2 moves in the directions of arrows 92 and 93 according to the rotation of the feed motor 22. The feed motor 22 rotates in the opposite direction when a reverse rotation signal is given.

A detection bar 20 is fixed to the bottom surface of the moving table 2 and moves integrally with the moving table 2. On the other hand, the frame 4 is provided with a detection switch 8 which is a detector and detects the detection bar 20. The detection switch 8 outputs a detection signal when the detection bar 20 is detected.

Grindstone bases 31 and 32 are located above the moving table 2, and grindstone rotation motors 11 and 12 are provided in the grindstone bases 31 and 32. Further, a rough whetstone 11K and a finishing whetstone 12K as a polishing section are connected to the whetstone rotating motors 11 and 12, respectively, and the whetstone rotating motors 11 and 12 rotate to polish the blade 10. The grindstone bases 31 and 32 are moved up and down in the directions of arrows 90 and 91 by the lifting motors 33 and 34. The rotating shafts of the lifting motors 33 and 34 are formed as lifting screws 33J and 34J, and the lifting screws 33J and 34J are screwed into nuts 31W and 32W integrally fixed to the grindstone bases 31 and 32, respectively. When the lifting screws 33J, 34J and the nuts 31W, 32W are screwed in, the lifting motors 33, 34 are driven, so that the grindstone bases 31, 32 are controlled to be lifted.

FIG. 2 shows the operation panel 4H of the polishing apparatus shown in FIG. When the automatic operation button 36 is turned on, the LED 40 lights up and the moving table 2 starts reciprocating movement in the directions of arrows 92 and 93. In this embodiment, the LED 40 also has a function as a stop display unit. The adjustment dial 35 as a polishing range adjusting unit is for adjusting the width of the back and forth movement of the moving table 2, that is, the polishing range R2 (FIG. 6). An ascending button 31a, a descending button 31b, and a rotating button 31c are provided as buttons for controlling the rough grindstone. Further, as buttons for controlling the finishing grindstone, an up button 32a, a down button 32b, and a rotation button 32c are similarly provided. When the cycle stop button 37 is turned on, the movable table 2 is returned to the initial position R1 (FIG. 6) at the end of the rail (not shown) and stopped, and the blade 10 is replaced.

The specific procedure for polishing the blade 10 is as follows. First, the blade 10 is attached and fixed to the blade mounting base 6 of the movable table 2. In this case, the movable table 2 is located at the initial position R1 shown in FIG. 6A. This initial position R1 is the end of the rail (not shown). Then, the automatic operation button 36 of the operation panel 4H is turned on to start moving the moving table 2. After that, the moving table 2 repeats reciprocating movements in the directions of arrows 92 and 93 in the polishing range R2 (FIG. 6A).

After the movement of the moving table 2 is started, polishing with the rough grindstone 11K is first performed. In this case, the rotation button 31c of the operation panel 4H is pressed to rotate the rough whetstone 11K. Then, the down button 31b is pressed to lower the whetstone base 31 in the direction of arrow 90. Then, when the blade 10 and the rough whetstone 11K come into contact with each other, the depression of the descending button 31b is released to stop the descending of the grindstone base 31. The moving table 2 reciprocates within a predetermined polishing range, and polishing is performed in this state.

When the polishing with the rough grindstone 11K is completed, the lift button 31a is pressed to raise the grindstone base 31 in the direction of arrow 91. Then, the rotation button 31c is pressed again to stop the rotation of the rough whetstone 11K. Then, polishing with a finishing grindstone 12K is performed. When the polishing of the finishing grindstone 12K is completed, the lift button 32a is pressed, the grindstone base 32 is lifted, and the rotary button 32c is pressed again to stop the rotation of the finishing grindstone 12K.

After finishing the polishing as described above, the cycle stop button 37 is pressed. In response to the input of the cycle stop button 37, the moving table 2 makes a return movement in the direction of arrow 93 toward the initial position R1 as shown in FIG. 6B. When the moving table 2 reaches the initial position R1, the movement is stopped, the blade 10 is exchanged at this position, and the next blade is polished.

In the present embodiment, when the cycle stop button 37 is pressed, the LED 40 on the operation panel 4H is made to blink to display the return movement of the movement table 2. By performing such a display, the operator can recognize that the movement in the direction of arrow 93 in the polishing range R2 as shown in FIG. 9B is the returning operation toward the initial position R1.

FIG. 3 shows a hardware configuration diagram of the polishing apparatus in this embodiment. A CPU 51, a ROM 52, and a RAM 53 are connected to the bus line 50, and the CPU 51 controls each unit according to a program stored in the ROM 52. The automatic operation button 36 and the cycle stop button 37 shown in FIG. 2 are connected to the bus line 50 via the A / D converter 54. Although other buttons provided on the operation panel 4H are also connected to the A / D converter 54, they are omitted in FIG.

The initial position detector 19 and the detection switch 23 are connected to the CPU 51 through an input port 55. The initial position detector 19 is provided near the initial position R1. Then, the initial position detection signal output from the initial position detector 19 is given to the CPU 51, and the CPU 51 recognizes that the moving table 2 is located at the initial position R1 (FIG. 9).

Further, based on the detection signal from the detection switch 23, the CPU 51 recognizes that the movable table 2 is located at the detection position as shown in FIG. Further, the CPU 51 controls the turning on, off, and blinking of the LED 40 through the output port 56, and also controls the rotations of the elevation motors 33 and 34, the grindstone rotating motors 11 and 12, and the feed motor 22.

Lighting of the LED 40 and control of each motor are performed according to ON / OFF operations of respective buttons of the operation panel 4H. Further, a clock 58 is connected to the CPU 51 and outputs a clock signal.

A specific circuit diagram of the adjustment dial 35 is shown in FIG. The volume of the resistor 35V changes in accordance with the rotating operation of the adjustment dial 35 in the directions of arrows 94 and 95 (FIG. 2), and the resistance value taken in accordingly changes. The CPU 51 takes in this resistance value via the A / D converter 54. When the adjustment dial 35 is rotated in the direction of arrow 94, the resistance value increases, and when it is rotated in the direction of arrow 95, the resistance value decreases.

FIG. 4 shows a flow chart regarding the lighting process of the LED 40 of the polishing apparatus in the present embodiment. Hereinafter, the specific processing contents executed by the CPU 51 will be described according to this flowchart. When the automatic operation button 36 (Fig. 2) on the operation panel 4H is pressed, the CPU 51 recognizes this through the A / D converter 54 (Fig. 3) and starts the rotation of the feed motor 22 to start the initial operation. The moving table 2 is moved from the position R1 (steps S2 and S4).

Then, the CPU 51 gives a lighting signal to the LED 40 via the output port 56 to light the LED 40 (step S6). The lighting of the LED 40 indicates that the moving table 2 is currently moving. After that, the moving table 2 repeats reciprocating movement within the polishing range R2 (see FIG. 9A) (step S8). This reciprocating movement is performed by the CPU 51 repeatedly giving a reverse rotation signal to the feed motor 22 at a predetermined timing (described later) to rotate the feed motor 22 forward and backward. The blade 10 is polished by the rough whetstone 11K and the finishing whetstone 12K while reciprocating the moving table 2 as described above.

Next, the CPU 51 determines whether or not the cycle stop button 37 has been pressed (step S10). When the worker presses the cycle stop button 37 as a stop command, the CPU 51 recognizes this via the A / D converter 54, outputs a stop signal to the feed motor 22, and initializes the moving table 2. It is moved toward the position R1 (step S12). Specifically, the output of the reverse rotation signal, which was reciprocating the moving table 2, is stopped, and the moving table 2 is moved in the direction of arrow 93 (see FIG. 9B).

Further, based on the depression of the cycle stop button 37, the CPU 51 gives a blinking signal to the LED 40 via the output port 56 to blink the LED 40 (step S14). Then, when the movable table 2 reaches the initial position, the movement of the movable table 2 is stopped (steps S16 and S18). Whether or not the moving table 2 has reached the initial position can be recognized by the initial position detection signal output from the initial position detector 19.

After stopping the movement of the moving table 2, the CPU 51 gives a turn-off signal to the LED 40 via the output port 56 to turn off the LED 40 (step S20). If the automatic operation button 36 is pressed again during the reciprocating movement of the moving table 2 in step S8, the moving table 2 stops at that position and the LED 40 is also turned off (steps S22, S18, S20).

As described above, when the cycle stop button 37 is pressed, the LED 40 on the operation panel 4H blinks. By performing such blinking display, the operator can recognize that the movement in the direction of arrow 93 in the polishing range R2 as shown in FIG. 9B is the returning operation toward the initial position R1.

In the above embodiment, the movable table 2 is moved back to the initial position R1 as the cycle stop button 37 is pressed, and at the same time, the LED 40 blinks. However, the present invention is not limited to this, and other configurations may be adopted as long as the return movement of the moving table is clearly displayed.

Next, details of the control of the reciprocating movement of the moving table 2 in the polishing range R2 shown above will be described with reference to the flowchart of FIG. When the automatic operation button 36 (FIG. 2) on the operation panel 4H is turned on, the CPU 51 recognizes this through the A / D converter 54 (FIG. 3), starts rotation of the feed motor 22, and moves the moving table 2 The movement is started (step S32). Then, the CPU 51 determines whether or not the detection signal is given from the detection switch (step S34), and repeats the determination process of the presence or absence of the detection signal through step S50.

Now, it is assumed that the moving table 2 is moving in the direction of the arrow 92 (FIG. 1), the detection bar 20 is in contact with the detection switch 8 and is positioned as shown in FIG. In this case, the CPU 51 recognizes this via the input port 55 and takes in the voltage value as the range signal indicated by the adjustment dial 35 (step S36). Then, the timer value X indicating the amount of movement time is obtained from this voltage value (step S38). The timer value X is calculated according to a preset arithmetic expression.

After obtaining the timer value X in step S38, the timer interrupt process is started (step S40). That is, when the detection bar 20 contacts the detection switch 8 and the detection signal is output, the timer interrupt process starts. In the timer interruption, "1" is subtracted from the timer value X according to the clock signal output from the clock 58, and it is stored as a new timer value X (step S42).

Then, the CPU 51 determines whether or not the timer value X has become “0” (step S 42), and stops the timer interrupt at the time when it becomes “0” (step S 44). Further, the CPU 51 gives a command to the feed motor 22 through the output port 56 to stop the movement of the movement table 2 (step S46), and subsequently gives a reverse rotation signal to rotate the feed motor 22 in the reverse direction (step S46). S48). That is, the reverse signal is output when the amount of change in the clock signal from the time when the detection signal is received becomes equal to the timer value X.

For example, from the state shown in FIG. 1, the moving table 2 moves in the direction of arrow 92, and when the CPU 51 outputs a reverse rotation signal, the moving table 2 moves in the opposite direction (direction of arrow 93). Will start. Then, through step S50, the process returns to step S34 again, and it is determined whether or not the detection bar 20 contacts the detection switch 8 and a detection signal is output. When the detection signal is output, the processing from step S36 to step S48 is repeated.

That is, when the moving table 2 moves in the direction of the arrow 93 and is again located at the position shown in FIG. 1, the measurement is performed again based on the timer value X based on this position, and the timer value X is “0”. Then, the reverse rotation signal is output. This causes the moving table 2 to move in the direction of arrow 92.

As described above, the width of the polishing range in which the moving table 2 reciprocates in the directions of arrows 92 and 93 is regulated according to the timer value X. Then, this timer value X is determined based on the voltage value indicated by the adjustment dial 35. That is, by rotating the adjustment dial 35 and changing the timer value X, it becomes possible to easily control the polishing range in which the moving table 2 reciprocates.

When the cycle stop button 37 is pressed and a stop command is given, the moving table 2 is moved to the initial position R1 and stopped (steps S50, S51). In this case, the blinking display of the LED 40 is performed as described with reference to FIG.

[0047]

[Effect of device]

 In the polishing apparatus according to the present invention, the stop display unit displays the stop display based on the stop instruction input to the input unit.

That is, the operator can clearly recognize the return movement of the movement table to the initial position, which is executed based on the stop signal. Therefore, an appropriate operation can be performed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a polishing apparatus according to the present invention.

FIG. 2 is a view showing an operation panel of the polishing apparatus shown in FIG.

FIG. 3 is a hardware configuration diagram of the polishing apparatus shown in FIG.

4 is a flow chart showing a program of LED display control in the polishing apparatus shown in FIG.

5 is a flowchart showing a program for adjusting a polishing range in the polishing apparatus shown in FIG. FIG. 8 is a diagram showing details of the timer circuit shown in FIG. 7.

FIG. 6 is a conceptual diagram of each position on the moving table.

FIG. 7 is an overall configuration diagram showing a conventional polishing apparatus.

8 is a perspective view showing details of a detection bar of the conventional polishing apparatus shown in FIG.

[Explanation of symbols]

 2 ... Moving table 10 ... Blade 11 ... Rough grindstone 12 ... Finishing grindstone 22 ... Feed motor 37 ... Cycle stop button 40.・ ・ ・ ・ LED 51 ・ ・ ・ CPU R1 ・ ・ ・ Initial position R2 ・ ・ ・ Polishing range

Claims (1)

[Scope of utility model registration request] 1. A moving table to which an object to be polished is attached, a polishing unit for polishing the object to be polished attached to the moving table, and a movable table is moved to reciprocate the object to be polished within a predetermined polishing range with respect to the polishing unit. And a drive unit for receiving a stop signal to return the moving table to an initial position, and an input unit for inputting a stop command and outputting the stop signal to the drive unit. A polishing apparatus comprising: a stop display unit that displays a stop display based on a stop command input to an input unit.