JP3157338B2 - Grinding machine tool mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention polishes the surface of a work.
The present invention relates to a tool mounting device for a polishing machine .

[0002]

2. Description of the Related Art Conventionally, a mold (hereinafter referred to as "work") is polished as shown in FIG.
1, a mold polishing machine as shown in FIG.

[0003] As shown in FIG.
X-moving body 6 that moves in the left-right direction
2. A Y moving body 63 that moves in the front-rear direction and a Z moving body 64 that moves in the vertical direction are provided. A spindle 65 is provided at a tip end portion of each of the moving bodies 62, 63, 64, and a grinding stone 66 is provided through the spindle 65.
Is attached. This mounting structure is proposed in Japanese Patent Application Laid-Open No. 63-295168. Further, the die polishing machine 60 is provided with a controller (not shown) for performing polishing automatically.

When the work 68 is polished, a tool 67 is placed along the surface of the work 68 in advance.
Is stored in the controller. And
The controller controls the movement of each of the moving bodies 62 to 64 based on the stored surface shape data of the work 68, and moves the tool 67 along the surface of the work 68, thereby performing the work of polishing the work 68. Was. Therefore, the work of polishing the work 68 was automatically performed by the mold polishing machine 60.

[0005] Since the work 68 can be unmanned for polishing, the work 68 can be polished even during a time when there is no worker, such as at night, as long as the shape of the work 68 is initially set. Further, the work efficiency in the polishing operation has been greatly improved by reducing the contents of the polishing operation by the operator.

However, the polishing of the work 68 comprises several types of polishing steps from rough polishing using a coarse grinding stone to finish polishing using a fine grinding stone. Therefore, every time each of these polishing steps is completed, it is necessary for the operator to replace the tool 67 for replacing the grindstone with a finer grindstone for the next polishing step.

For this reason, even when the work 68 is polished during a time period such as a night or a holiday when the factory is unmanned, the die polishing machine 60 is used every time each polishing step is completed.
Since the polishing was stopped, the polishing operation could be performed only in one step. Further, when trying to carry out the polishing operation in several steps using these time zones, the operator has to go to the factory to change the tool 67.

[0008] That is, between each polishing step, the tool 6 by the operator.
There was an exchange operation of No. 7, and automation over the entire polishing process was not performed. As a result, the mold polishing machine 60 is stopped every time each polishing step is completed, so that the time period during which the factory is unmanned, such as at night or on holidays, cannot be effectively utilized.

Therefore, the present applicant has proposed a tool changer for automatically changing the tool 67. The automatic exchange device is provided with a rotating table and a clamp device for holding or releasing a tool with respect to the table. A predetermined tool 67 is held in this clamp device. The control unit of the automatic changing device can stop the clamp device of the tool to be changed at the changing position. Therefore, the spindle is moved to the exchange position by the controller, the tool 67 held by the clamp device of the tool exchange device is mounted, and then the workpiece 68 of the die polishing machine is polished.

[0010]

As shown in FIG. 12, a pair of engaging pins 69 are formed on the spindle 65 for integrally rotating the tool 67 and the spindle 65. It is designed to be inserted into an engagement recess 70 formed in the tool 67. Therefore, when the spindle 65 is mounted on the tool 67, the engagement pin 6
9 and the engagement recess 70 of the tool 67 need to be aligned. When the engaging recess 70 of the tool 67 is held by the clamp device, the engaging recess 70 can always be set in a fixed direction. However, since the spindle 65 rotates,
There is a problem that the direction of the engaging pin 69 when stopped cannot be always constant.

The present invention has been made to solve the above problems, and has as its object the purpose of positioning a tool and a slide.
The grinding that can easily engage with the engaging part of the pindle
An object of the present invention is to provide a tool mounting device for a polishing machine .

[0012]

According to the first aspect of the present invention, a tool which can be engaged with a rotatably provided spindle in a concave and convex relationship is provided in a state where the tool is positioned, and the spindle is stopped. Sometimes a tool mounting device of a polishing machine that engages the spindle with the tool and attaches the tool to the spindle, and before engaging the spindle with the tool, positions the engaging portion of the spindle in advance. A correction mechanism for correcting the tool to a position corresponding to the engaged portion of the tool in the set state , wherein the correction mechanism includes
Spindle is moved by moving the pindle to the compensation mechanism.
Abuts the engaging portion of the tool, and engages the engaging portion with the engaged portion of the tool.
The gist is that a guide portion for guiding to a position corresponding to is provided . According to a second aspect of the present invention, in the tool mounting device for a polishing machine according to the first aspect, the gist is that the correction mechanism is arranged near an engagement portion between the spindle and the tool. According to a third aspect of the present invention, in the tool mounting device for a polishing machine according to the first aspect , the correction mechanism includes:
A first cylindrical portion formed into a bottomed cylindrical shape, and a first cylindrical portion
Sliding in the opening within a predetermined range with respect to the first cylinder
And a second cylinder portion provided so as to be capable of being provided, and a first cylinder portion
Between the bottom of the first cylinder and the second cylinder, the first cylinder
Biasing means for biasing in a direction away from the bottom of the part,
The gist is that the guide portion is provided at the tip of the second cylindrical portion.
I do.

[0013]

According to the first aspect of the present invention, the engaging portion of the stopped spindle is corrected by the correcting mechanism to a position corresponding to the engaged portion of the tool which is positioned in advance. You. After that, the engaging portion of the spindle is engaged with the engaged portion of the tool, and the tool is attached to the spindle. Therefore, engagement between the positioned tool and the engaging portion of the spindle can be easily performed. Also,
The guide moves the spindle to the compensation mechanism.
The position of the engaging part of the spindle is corrected by
Position correction can be performed by a simple operation. According to the second aspect of the present invention, since the distance from the correction mechanism to the tool is short, after the position of the engaging portion of the spindle is corrected by the correction mechanism, the engagement is performed before the tool is engaged. It is possible to prevent the position of the part from shifting due to an external factor as much as possible. According to the third aspect of the present invention, the spinned
When the engaging part of the handle comes into contact with the guide,
Even so, the pressing force is absorbed by the urging means. others
When correcting the engaging part of the spindle, the engaging part is damaged
Can be prevented as much as possible.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIG. 1, a gate-shaped frame 2 of the mold polishing machine 1 is provided with an X moving body 3 moving in the left-right direction, a Y moving body 4 moving in the front-rear direction, and a Z moving body 5 moving in the vertical direction. ing. An air motor 6 is mounted via each of the moving bodies 3 to 5.

As shown in FIG. 2, an air supply pipe 6a is connected to the air motor 6. The air motor 6 is supplied with pressurized air via the air supply pipe 6a. The air motor 6 is driven by this air, and the spindle 7 of the air motor 6 rotates. A spherical ball joint 8 is provided at the tip of the spindle 7, and engagement pins 8 a are formed on both sides of the ball joint 8 so as to be in a horizontal state. A cylindrical tool 9 is mounted on the ball joint 8.

The tool 9 has a cylindrical shape with a bottom, and a main body 9a in which a housing portion 9b for housing the ball joint 8 is formed, and an engaging pin 8a of the ball joint 8
Is formed, and a grindstone G attached to the bottom surface of the main body 9a via an insulating sheet (not shown). Then, by inserting the ball joint 8 into the housing 9b of the tool 9 with the engagement pin 8a of the ball joint aligned with the engagement recess 9c of the tool 9, the tool 9 is It is designed to be attached.

Further, the mold polishing machine 1 is provided with a controller (not shown) for performing polishing automatically. When the work W is polished, the surface shape of the work W is stored in the controller by moving the tool 9 along the surface of the work W in advance. Then, based on the stored surface shape data of the work W, the controller controls the movement of each of the moving bodies 3 to 5. Therefore, since the tool 9 to be rotationally polished can be moved along the surface of the work W, the work of polishing the surface of the work W is automatically performed by the die polishing machine 1.

At a position adjacent to the right side of the work W, a tool changing device 11 which can be moved in the front-rear direction by a linear guide rail 10 is installed. As shown in FIG. 3, the tool changing device 11 includes a support table 12 that runs on the linear guide rail 10 and a storage unit 14 that is rotatable around the rotation axis 13 with respect to the support table 12. It is configured. The storage section 14 has electromagnetic valves 16 to 19.
And a hose 15 from a compressor (not shown).
The air is supplied to the electromagnetic valves 16 to 19 via the.

A disk-shaped table 20 is provided at the center of the upper surface of the storage section 14, and the table 20 is rotatably provided via a bearing 22 by a rotating shaft 21 provided at the center of the lower surface. . And the table 2
The zero rotation shaft 21 is connected to a drive shaft 24 of a motor 23 via a timing belt 25, so that the table 20 rotates.

As shown in FIG. 3 and FIG.
A plurality of (six in this embodiment) clamping devices 26 are disposed on the upper surface of the table 0 so as to face the outside of the table 20 and protrude from the outer peripheral edge of the table 20. A pair of holding pieces 27 projecting from the outer peripheral edge of the table 20 are provided at the tip of the clamp device 26. The holding piece 27 can be opened and closed by the air supplied to the clamp device 26, and the holding piece 27 holds or releases the tool 9 provided with each grindstone G from rough polishing to finish polishing. It has become.

Further, two hoses 28a and 28b for supplying air are connected to the clamp device 26, and the other ends of the hoses 28a and 28b are connected to the table 20 as shown in FIG. The through-hole 29a,
29b.

As shown in FIG. 3 and FIG.
An air supply member 31 that moves up and down via an air cylinder 30 by opening and closing the electromagnetic valve 19 is provided below the left end of the “0”. The air supply member 31 has two L-shaped communication passages 32a and 32b penetrating therethrough. The electromagnetic valve 1 is connected to one end of each of the communication passages 32a and 32b via two hoses on the side of the air supply member 31.
7, 18 are connected. Further, the air supply member 3
At the other end of 1, a recess is formed around each of the communication passages 32 a and 32 b, and an O-ring 33 is provided in each of the recesses. Therefore, when the air supply member 31 is raised by the operation of the air cylinder 30, the communication paths 32a and 32b are connected to the communication holes 29a and 29b via the O-ring 33.
To be connected to.

Below the tool 9 held by the holding piece 27 of the clamp device 26 stopped at the tool changing position, a tool support table 35 that moves up and down via an air cylinder 34 by opening and closing the electromagnetic valve 16. Is installed.

A contact surface 36 for contacting the tool 9 is formed on the upper surface of the tool support base 35. That is,
When the ball joint 8 is accommodated in the accommodating portion 9b of the tool 9 with the engaging pin 8a of the ball joint 8 and the engaging recess 9c of the tool 9 being matched with each other, the air cylinder 34 is used.
By moving the tool upward, the contact surface 36 of the tool auxiliary table 35 is brought into contact with the lower surface of the tool 9. Therefore, the tool 9 can be corrected to a horizontal state, and the tool 9 can be securely mounted on the ball joint 8. When the mounting operation is completed, the tool auxiliary table 35 is moved downward by the air cylinder 34, and the contact surface 36 of the tool auxiliary table 35 is separated from the bottom surface of the tool 9. Then, after the holding piece 27 of the clamp device 26 is opened, the holding piece 27 is closed again. At this time, if the tool 9 is properly mounted on the ball joint 8, the tool 9
Can be held. When the holding piece 27 is closed again, a voltage is applied to the spindle 7 by a voltage applying device (not shown). And
If the holding piece 27 holds the tool 9, the electric current is applied to the tool changing device 1.
It flows to one side and can detect that the tool 9 is properly mounted on the ball joint 8.

A pin position correcting mechanism 37 for correcting the position of the engaging pin 8a of the ball joint 8 is provided at the left end of the upper surface of the housing portion 14. FIG. 8 (A)
As shown in the figure, the pin position correcting mechanism 37 is composed of an outer cylinder 38 fixed to the housing part 14 and a piston 39. The outer cylinder 38 is formed in a bottomed cylindrical shape, and the piston 39 is inserted therein via a coil spring 40 so as to be slidable up and down. A long hole T extending in the vertical direction is formed through the upper outer peripheral surface of the outer cylinder 38. Through this elongated hole T, the piston 3
A bolt B is screwed into a lower portion of the piston 9, and the piston 39 is always moved upward by the bias of the coil spring 40, so that the bolt B is located at the upper end of the elongated hole T.
Therefore, when the piston 39 moves down against the urging force of the coil spring 40, the piston 39 can be moved down until the bolt B comes into contact with the lower end of the elongated hole T. Further, the piston 39 is not rotated by the bolt B. As shown in FIGS. 8A and 8B, slopes 39a and 39b are formed on the upper surface of the piston 39 so as to be triangular when viewed from the side. The engagement pins 8a of the ball joint 8 are adapted to engage with the 39a and 39b. or,
Positioning recesses 39d are formed on the slopes 39a, 39b so as to be orthogonal to the top 39c formed by the slopes 39a, 39b. The engaging pin 8a of the ball joint 8 is inserted into the positioning recess 39d, and the positioning of the engaging pin 8a is performed. Chamfers 39e are formed on the slopes 39a, 39b on both sides of the positioning recess 39d. The chamfered portion 39e allows the engaging pin 8a of the ball joint 8 engaged with the inclined surfaces 39a and 39b to be smoothly guided to the positioning recess 39d. Further, an insertion hole 39f into which the ball joint 8 is inserted is provided in the center. In this example,
The piston 39 is attached to the outer cylinder 38 so that the positioning recess 39d is parallel to the longitudinal direction of the tool changing device 11.

Therefore, as shown in FIGS. 9A and 9B, when the spindle 7 stopped above the pin position correcting mechanism 37 is lowered, the ball joint 8 is inserted into the insertion hole 39f of the piston 39. And the ball joint 8
Is engaged with the slopes 39a and 39b of the piston 39. When the spindle 7 is further lowered while pressing the piston 39 against the urging force of the coil spring 40, the engagement pin 8 of the ball joint 8 is
a slides down along the slopes 39a, 39b.
Rotates. Eventually, the engagement pin 8 of the ball joint 8
a is inserted into the positioning recess 39d through the chamfered portion 39e. As a result, the engagement pin 8a of the ball joint 8 is positioned parallel to the longitudinal direction of the tool changing device 11.

In this embodiment, the engagement pin 8a and the engagement recess
Part 9c, outer cylinder 38, piston 39, slopes 39a, 39
b, the chamfer 39e, and the coil spring 40
The engaging portion, the engaged portion, the first tubular portion, and the second tubular portion of the present invention, respectively.
Section, guide section, and biasing means. Further, as shown in FIG. 3, a position sensor 42 is provided on the upper left side of the storage section 14 via a support bracket 41, and the position sensor 42 is provided with a holding piece 27 of the clamp device 26 in the tool changing device. The holding piece 27 is detected when in the open state, and is not detected when the holding piece 27 is in the closed state.

As shown in FIG. 5, a proximity sensor 44 as a detection sensor is fixed to the storage section 14 via a support bracket 43 in front of the air supply member 31. The proximity sensor 44 stops a desired clamp device 26 at a tool changing position by detecting a position detection bar 45 as an object to be detected, which is fixed to a lower surface of the table 20 at a position facing each clamp device 26. Then, the rotation of the table 20 is stopped.

Further, as shown in FIGS. 6 and 7, two communication passages 32 on the upper surface of the air supply member 31 are provided.
A position control bar 46 is provided between a and 32b. When the air supply member 31 is raised by the air cylinder 30, the position regulating bar 46 is moved to the communication hole 29.
a and 29b are inserted into the position regulating holes 47 penetrating therethrough. As a result, the desired clamp device 26 is positioned at the tool change position.

As shown in FIGS. 3 and 10, each of the air cylinders 30 and 34 has a magnetic sensor 50 to 53 provided at the upper and lower parts of the cylinder for detecting the magnetism of a magnet provided at the lower end of the piston. By detecting the position of the piston, the position of the vertical movement of the piston is detected.

Next, the electrical configuration of the tool changer in this embodiment will be described. As shown in FIG. 11, the tool changing device 11 is automatically controlled by a controller C. The controller C has a central processing unit (hereinafter referred to as a CPU) 48 and an R which stores a control program in advance.
OM 49a and RAM 49 for temporarily storing operation results and the like
b.

When the proximity sensor 44 detects the position detecting bar 45, the CPU 48 recognizes that the predetermined clamp device 26 is at the tool changing position and stops the motor 23.

The CPU 48 recognizes the position of the piston based on detection signals from the upper magnetic sensor 50 and the lower magnetic sensor 51 provided in the cylinder of the air cylinder 30. The CPU 48 recognizes the position of the piston based on detection signals from the upper magnetic sensor 52 and the lower magnetic sensor 53 disposed in the cylinder of the air cylinder 34.

The position sensor 42 detects the holding piece 27 when the clamping device 26 is at the tool changing position and the holding piece 27 is open.
U48 recognizes that the holding piece 27 is open.

The CPU 48 controls the opening and closing of the electromagnetic valve 19 to move the air cylinder 30 up and down.
The CPU 48 controls the opening and closing of the electromagnetic valve 16 to move the air cylinder 34 up and down.

The CPU 48 controls the electromagnetic valve 17 to open and the electromagnetic valve 18 to close to open the holding piece 27 of the clamp device 26. Also, C
The PU 48 controls the electromagnetic valve 17 to a closed state and the electromagnetic valve 18 to an open state to close the holding piece 27 of the clamp device 26.

Next, the operation of the tool changer configured as described above will be described with reference to FIGS.
Note that, as shown in FIG.
When the engagement recess 9c of the unused tool 9 held at the stop position is stopped at the exchange position, the engagement recess 9c is previously held on the holding piece 27 so as to be parallel to the positioning recess 39d of the piston 39 in the pin position correction mechanism 37. ing.

In this state, when the work of polishing the work W by the predetermined tool 9 such as rough polishing is completed, the CPU 4
Reference numeral 8 denotes a tool changer for moving the spindle 7 on which the tool 9 is mounted to a tool change position set in the tool changer 11. At this time, the clamp device 26 corresponding to the tool 9 is waiting at the tool change position. At this time, the air supply member 31 is at the raised position.

When the tool 9 is detached, the spindle 7
When the CPU 48 reaches the position above the tool changing position, the CPU 48 opens the electromagnetic valve 17 and opens the holding piece 27 of the clamp device 26.
Open. At this time, the CPU 48 operates the position sensor 42 to determine whether or not the holding piece 27 of the clamp device 26 has been opened. When the holding piece 27 has not been opened, the CPU 48 causes the die polishing machine 1 and the tool changing device 11 to stop abnormally.

When the CPU 48 determines that the holding piece 27 has been opened, it lowers the spindle 7. And
When the spindle 7 is lowered to the tool change position, the CPU 4
Numeral 8 controls opening and closing of the electromagnetic valve 16 to move the tool support base 35 up and down via the air cylinder 34. At this time, since the tool 9 mounted on the spindle 7 is pressed from below by the tool support 35, the posture of the tool 9 is corrected horizontally. After that, the CPU 48 closes the electromagnetic valve 17 and opens the electromagnetic valve 18 to close the holding piece 27 of the clamp device 26 to grip the tool 9.

Thereafter, the CPU 48 raises the spindle 7 with the holding piece 27 of the clamp device 26 holding the tool 8, and detaches the tool 9 from the spindle 7. Then, based on the control program stored in the ROM 49a in advance, the CPU 48 moves the spindle 8 to the upper part of the pin position correcting mechanism 37 of the tool changing device 11 to change the tool 9 and stops it.

As shown in FIGS. 8, 9A and 9B, when the spindle 7 stopped above the pin position correcting mechanism 37 is lowered, the ball joint 8 is inserted into the insertion hole of the piston 39. 39f, the engaging pin 8a of the ball joint 8 is connected to the slopes 39a, 39 of the piston 39.
b. And coil spring 4
When the spindle 7 is further lowered while pressing the piston 39 against the urging force of 0, the engagement pin 8a of the ball joint 8 slides down along the slopes 39a and 39b, and the spindle 7 rotates. Eventually, the engaging pin 8a of the ball joint 8 passes through the chamfered portion 39e and the positioning recess 39d
Is inserted into. As a result, the engagement pin 8a of the ball joint 8 is positioned parallel to the longitudinal direction of the tool changing device 11.

When the positioning of the engaging pin 8a is performed as described above, the CPU 48 raises the spindle 7 and moves the spindle 7 to above the tool changing position. On the other hand, as shown in FIGS. 7 and 8, the CPU 48 closes the electromagnetic valves 17 and 18 and closes the electromagnetic valve 19 to lower the piston of the air cylinder 30 so that the air supply member 31 is closed. Let go down. When the piston of the air cylinder 30 is lowered and the CPU 48 detects a detection signal from the lower magnetic sensor 51, the CPU 48 drives the motor 23 to rotate the table 20 and activates the proximity sensor 44.

When the clamp device 26 provided with the tool 9 used in the next polishing operation is moved to the tool change position by the rotation of the table 20, the proximity sensor 44 causes the position detecting bar 45 corresponding to the clamp device 26 to move. Detect. Based on this detection signal, the CPU 48 stops driving the motor 23 to stop the rotation of the table 20.

When the table 20 stops, the CPU 4
8 raises the piston of the air cylinder 30 by opening the electromagnetic valve 19. Then, the air supply member 31 rises due to the rise of the piston, and the position regulating bar 46 fixed to the air supply member 31 also rises.
When the position regulating bar 46 rises, the position regulating bar 46 is inserted into the position regulating hole 47 of the table 20,
The clamp device 26 is positioned at a tool change position.

When the position regulating bar 46 is inserted into the position regulating hole 47, the upper magnetic sensor 50 in the air cylinder 30 detects magnetism. When the upper magnetic sensor 50 detects the magnetism, the CPU 48 determines that the clamp device 26 is at the tool changing position.

On the other hand, unless the position regulating bar 46 is inserted into the position regulating hole 47, the upper magnetic sensor 50 in the air cylinder 30 does not detect magnetism. For this reason,
The CPU 48 determines that the clamp device 26 is not stopped at the tool change position, and abnormally stops the tool change device 11.

In this way, the CPU 48 controls the upper magnetic sensor 5
When it is determined that the clamp device 26 has stopped at the tool change position based on the detection signal of 0, the CPU 48 controls the spindle 7 stopped above the tool change position as shown in FIGS. Let go down. Then, the spindle 7 is pressed and inserted into the tool 9 from above. At this time, the CPU 48 opens the electromagnetic valve 16, raises the piston of the air cylinder 34, and raises the tool support 35. As described above, the tool 9 held by the clamp device 26 moves downward from the contact surface 3 of the tool auxiliary table 35.
6 is supported. Then, by being pressed by the ball joint 8 of the spindle 7 from above, the engaging pin 8a of the ball joint 8 engages with the engaging concave portion 9a of the tool 9, and the tool 9 is mounted on the ball joint 8. .

When the ball joint 8 has been lowered, the CPU 48 closes the electromagnetic valve 16 and lowers the piston of the air cylinder 34 to lower the tool support 35. Then, in order to confirm the attachment of the tool 9 to the spindle 7, the CPU 48 opens the holding piece 27 of the clamp device 26 once and then closes it again to grip the tool 9. At this time, the tool 9 and the holding piece 2 are connected via a ball joint 8 from a voltage applying device (not shown).
A weak current is passed through the sensor, and the attachment of the tool 9 is confirmed by detecting the weak current. When a weak current is detected, the CPU 48 determines that the tool 9 is correctly mounted on the spindle 7 and opens the holding piece 27. When a weak current is not detected, C
The PU 48 determines that the tool 9 has not been correctly mounted on the spindle 7 and abnormally stops the mold polishing machine 1 and the tool changing device 11.

When the tool 9 is correctly mounted on the spindle 7, after the holding piece 27 is opened, the CPU 48 controls the opening and closing of the electromagnetic valve 16 again and controls the tool via the air cylinder 34. The auxiliary table 35 is moved up and down. Thus, the tool 9 is securely attached to the spindle 7 by pressing the tool 9 from below.

After raising the spindle 7 on which the tool 9 is mounted, the CPU 48 moves to the work W to start the polishing operation in the next step. Similarly, every time each polishing step is completed, the CPU 48 changes the tool in the tool changing device 11 to continuously advance each polishing step.

As described in detail above, according to this embodiment,
The direction of the engaging recess 9c of the grinding stone tool 9 and the direction of the engaging pin 8a of the ball joint 8 can be matched by the pin position correcting mechanism 37, so that the ball joint 8 and the tool 9 can be easily mounted.

A coil spring 40 is provided in the pin position correcting mechanism 37 so that the ball joint 8 provided on the spindle 7 can absorb the pressing force when the piston 39 is pressed. 8 can be prevented from being damaged.

Further, when the tool 9 is connected to the ball joint 8, it is possible to confirm that the tool 9 is securely mounted on the ball joint 8 by introducing an energizing operation for confirming the connection.

Further, the tool changer 11 can automatically change the tool 9 in each polishing step, and can perform the process from rough polishing to finish polishing even during a time when the factory is unmanned, such as at night or on holidays. The entire polishing process can be performed continuously.

It should be noted that the present invention is not limited to the above embodiment, but may be configured as follows without departing from the spirit of the invention. (1) In the above embodiment, the coil spring 40 is provided in the pin position correcting mechanism 37 to absorb the pressing force of the ball joint 8, but the coil spring 40 may be used without using the coil spring 40. At this time, the engagement pin 8a of the ball joint 8 is prevented from being damaged by the pressing force.
The engagement recess 39d of the pin position correction device 37 may be formed deeper.

(2) In the above embodiment, the vertical movement of the pin position correcting mechanism 37 is performed by the coil spring 40, but may be configured by using another elastic member such as rubber or sponge.

[0058]

As described above in detail, according to the first aspect of the present invention, the engaging portion of the spindle in the stopped state is the engaged portion of the tool which is previously positioned by the correction mechanism. After being corrected to the position corresponding to the above, the engaging portion of the spindle is engaged with the engaged portion of the tool, so that the engaged tool and the engaging portion of the spindle can be easily engaged. . In addition, a guide mechanism allows the spindle to be corrected.
The position of the engaging part of the spindle is corrected by simply moving it to the side
The position can be corrected with simple operations.
Wear. According to the second aspect of the present invention, since the distance from the correction mechanism to the tool is short, after the position of the engaging portion of the spindle is corrected by the correction mechanism, the engagement is performed before the tool is engaged. It is possible to prevent the position of the part from being shifted due to an external factor as much as possible. According to the third aspect of the present invention, when the engaging portion of the spindle comes into contact with the guide portion, it is released.
Even if the guide part is pressed, the pressing force is absorbed by the urging means.
Will be collected. For this reason, when correcting the engagement portion of the spindle,
The engagement part can be prevented from being damaged as much as possible.
You.

[Brief description of the drawings]

FIG. 1 is a front view showing a mold polishing machine.

FIG. 2 is a front view showing an air motor and a tool.

FIG. 3 is a front view showing a tool changing device.

FIG. 4 is a plan view showing a tool changing device.

FIG. 5 is a partial front view showing a tool changing device around an air supply member.

FIG. 6 is a side view illustrating a state where the air supply member is lowered.

FIG. 7 is a side view showing a state where the air supply member is raised.

FIG. 8A is a perspective view showing a pin position correcting mechanism, and FIG. 8B is a partial side view showing an upper portion of the pin position correcting mechanism.

FIGS. 9A and 9B are plan views showing how a pin position correcting mechanism and a ball joint are engaged.

FIG. 10 is a block diagram showing an electrical configuration of the tool changing device.

FIG. 11 is a front view showing a conventional mold polishing machine.

FIG. 12 is a front view showing an engagement portion between a spindle and a tool.

[Explanation of symbols]

7 ... spindle, 8a ... engagement pin as engagement part, 9 ...
Tool, 11 ... Tool changer as a tool mounting device, 37
... A pin position correcting mechanism as a correcting mechanism, 38... An outer cylinder as a first cylindrical portion, 39... A piston as a second cylindrical portion, 39 a and 39 b. Part, 40 ... Coil spring as urging means

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Koji Matsunami 1333-1, Atobe, Mugegawa-cho, Takeri-gun, Gifu Prefecture Inside Nagase Integrex Co., Ltd. (56) References JP-A-48-88566 (JP, A) JP-B-38-10091 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23Q 3 / 157

Claims (3)

(57) [Claims] 1. A spindle (7) rotatably provided.
A tool (9) that can be engaged with the tool (9) is provided in a state where the tool (9) can be engaged with the tool (9) by positioning the spindle (7) and the tool (9) while the spindle (7) is stopped. A tool mounting device of a polishing machine for mounting a tool (9) on a spindle (7), wherein an engaging portion (5) of the spindle (7) is previously provided before the spindle (7) and the tool (9) are engaged. 8a) is connected to the engaged portion (9) of the tool (9) in the positioned state.
c) a correction mechanism (37) for correcting the position corresponding to (c) , wherein the correction mechanism (37) includes the spindle (7).
Is moved to the correction mechanism (37) side,
Abutting against the engaging portion (8a) of the
a) corresponds to the position corresponding to the engaged portion (9c) of the tool (9).
Guides (39a, 39b, 39e)
A tool mounting device for a grinding machine. 2. A tool mounting device for a grinding machine according to claim 1, wherein the correction mechanism (37) is arranged near an engagement portion between the spindle (7) and the tool (9). . 3. The correction mechanism (37) is formed in a bottomed cylindrical shape.
The first tubular portion (38) thus formed and the first tubular portion (3
A predetermined range with respect to the first cylindrical portion (38) is provided in the opening of 8).
A second tubular portion (39) slidably provided within the enclosure;
And a bottom portion of the first tubular portion (38) and a second tubular portion.
(39), the second cylindrical portion (39) is connected to the first cylindrical portion.
(38) urging means for urging in a direction away from the bottom portion
(40) is provided at the tip of the second cylindrical portion (39).
The interior (39a, 39b, 39e) is provided.
The tool mounting device for a polishing machine according to claim 1.