JPH07246560A - Automatic grinding wheel change device - Google Patents

Abstract

PURPOSE:To obtain an automatic grinding wheel change device which can exchange grinding wheels safely and in a good workablility. CONSTITUTION:An arm 01 movable laterally, vertically, and longitudinally; a grinding wheel exchange head 1 and a grinding wheel flange bolt change head 4 installed to the arm 01 so that whose base ends can rotate around a horizontal shaft 5 and rotate around a vertical shaft; a grinding wheel flange bolt hole detecting means installed to the grinding wheel flange bolt exchange head 4; and an NC control device to operate the arm the grinding wheel change head, and the grinding wheel flange bolt change head; are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grindstone exchanging head applied to a grinder having a flange-mounted grindstone and an automatic grindstone exchanging apparatus having a grindstone flange bolt exchanging head.

[0002]

2. Description of the Related Art Generally, a Christmas tree shape of a fitting portion with a turbine rotor, which is called blade root serration of a turbine or a gas turbine blade, is ground by a biaxial grinder or the like. A biaxial grinder having a flange-mounted grindstone is generally a disc-shaped grindstone (Max. Φ600 × 130t × 50k) that has been lifted from a temporary storage space.
gf / piece) is used as a spindle for a grinder and a grindstone is manually replaced by using a simple grindstone replacement jig or the like.

Further, a column field type (Column) having a structure in which a table is fixed by a commercially available grinder and a grindstone moves
There is a grinder called field type). Some of these are equipped with a grindstone changing device.

[0004]

The replacement of the grindstone of the conventional grinder having the flange-mounted grindstone is performed manually, but the grindstone is large and heavy. This is a work that puts a considerable burden on the worker and is dangerous. Further, column feed type grinders are generally expensive, but pull studs with a chucking type automatic grindstone changing device are also commercially available. However, none of the grinders having the flange-mounted grindstone have a grindstone automatic exchanging device.

[0005]

The present invention takes the following means in order to solve the above problems.

That is, as an automatic grindstone exchanging device, an arm movable to the left, right, up and down, and front and rear, and a grindstone exchanging head attached to the arm such that a base end thereof is rotatable about a parallel axis and rotatable about an up and down axis, A grindstone flange bolt exchange head, a grindstone flange bolt hole detecting means attached to the grindstone flange bolt exchange head, and an NC controller for operating the arm, the grindstone exchange head, and the grindstone flange bolt exchange head are provided.

[0007]

When the grindstone is replaced by the above means, the NC
In response to a signal from the control device, the arm moves, the grindstone flange bolt replacement head approaches the grindstone to be replaced, and the grindstone flange bolt hole position detecting means detects the flange bolt hole of the grindstone. Then, the flange bolt exchange head is positioned and the flange bolt is removed. Next, the flange bolt exchange head is rotated 180 ° around the parallel axis, and the position of the exchange head is exchanged with that of the grindstone exchange head. The whetstone exchange head operates and the whetstone is pulled out. Further, the arm moves, the grindstone replacement head moves to the grindstone temporary storage place, and the grindstone is placed. Next, the replacement head approaches the new grindstone and grips the grindstone.
Then return to the position where the whetstone was pulled out and set the whetstone. Further, it is rotated by 180 ° around the parallel axis, and the position is changed with the grinding wheel flange bolt exchange head. Then, the bolt is tightened.

As described above, the grindstone is easily and automatically replaced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention described above will be described with reference to FIGS.

FIG. 1 is an overall perspective view, FIG. 2 is a longitudinal sectional view of a grindstone exchanging head, FIG. 3 is a front view of a grindstone portion, and FIG. 4 is a longitudinal sectional view of a grindstone flange bolt exchanging head.

In FIG. 1, an arm 01 which is movable left and right (X), up and down (Z) and forward and backward (Y) is provided. The grindstone replacement head 1 and the grindstone flange bolt replacement head 4 are arranged in parallel. These base ends are attached to the arm 01 so as to be rotatable about the parallel axis 5 and rotatable about the vertical axis 9. Further, as shown in FIG. 4, a flange bolt detection sensor 11 is attached to the grindstone flange bolt exchange head 4. These are automatically operated by an NC controller (not shown).

A grindstone 8 is attached to the machine spindle 3 with a flange bolt. The grindstone replacement head 1 is shown in FIG. The head main body 15 is movable in the front-rear direction by a feed screw 16 arranged coaxially. A grindstone holding claw 16 for pressing the outer peripheral surface of the grindstone 8 is arranged around the front end portion of the head main body 15, and is movable in the radial direction by a feed screw 17. Reference numerals 18, 19 and 20 in the figure denote a grindstone gripping drive motor, a pinion and a ring gear, respectively.

The grindstone exchanging head 1 is shown in FIGS. 2 and 3. The end of the machine main shaft 3 is formed in a disk 3a shape. A notch 11a for detecting the bolt position is provided equally around the circumference (FIG. 3). Grindstone flange bolt replacement head 4
The main body 21 can be moved back and forth by a feed screw 22 arranged coaxially. Bolt runners 23 are arranged at equal intervals around the front portion of the main body 21. A flange bolt detection sensor 11 is attached to the front end at a position corresponding to the notch 11a. Further, around the front end of the main body 21, a grindstone flange gripping claw 24 for pressing the outer periphery of the grindstone flange 12 is attached so as to be movable in the radial direction. In the figure, 25 is an operating cylinder for the grindstone flange gripping claw.

In the above, when exchanging the grindstone, NC
A signal from the control device causes the arm 01 to move, and the grindstone flange bolt replacement head 4 approaches the front of the grindstone 8 to be replaced. The feed screw 22 rotates, the main body 21 moves forward, and the grindstone flange bolt hole position detection sensor 11 detects the flange bolt hole (notch 11a) of the grindstone. Then, it is positioned, and then the grindstone flange gripping claw 24 is operated to grip the grindstone flange 12. Then, the bolt runner 23 operates and the flange bolt 13 is removed. Next, it is rotated by 180 ° around the parallel axis 5 and the position of the grinding wheel exchange head 1 is changed. The feed screw 16 turns, and the main body 15 advances. Then, the grindstone gripping claw 26 is operated to grip the grindstone 8. Next, the feed screw 16 turns, the main body 15 moves backward, and the grindstone 8 is pulled out.

Further, the arm 01 moves rearward, the grindstone exchanging head 1 moves to the grindstone temporary storage 7, and the grindstone 8 is placed. Next, the replacement head 1 approaches the new grindstone 8 and grips the grindstone 8. Then, the grindstone 8 is returned to the pulled-out position, and the grindstone 8 is set on the shaft 3. Furthermore, it rotates 180 ° around the parallel axis 5 and the grinding wheel flange bolt exchange head 4
And position change. Then, the bolt 13 is tightened.

The above operation is performed by the NC program of the NC control panel (NC control unit) of the automatic grindstone exchanging device and the NC control panel of the grinding machine.

As described above, the replacement of the grindstone can be automatically performed, and the manual replacement of the flange-mounted heavy grindstone can be avoided. Therefore, dangerous work can be avoided.

The grindstone can be automatically replaced without purchasing a commercially available expensive grinder. Therefore, the effect of improving the work and automating is great.

[0019]

As described above, according to the present invention, the flange type heavy grindstone can be automatically replaced, and the safety,
Workability is greatly improved.

[Brief description of drawings]

FIG. 1 is a configuration perspective view of an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a grindstone exchanging head portion of the embodiment.

FIG. 3 is a front view of the grindstone portion of the embodiment.

FIG. 4 is a vertical sectional view of a grindstone flange bolt exchange head portion of the same embodiment.

[Explanation of symbols]

 01 Arm 1 Grindstone exchange head 3 Grinding machine Grindstone axis (machine axis) 4 Grindstone flange bolt exchange head 5 Parallel axis 7 Grindstone temporary storage area 8 Grindstone 9 Vertical axis 11 Flange bolt detector 11a Cutout 12 Grindstone flange 13 Flange bolt 15 Main body 16 Feed screw 17 Grinding stone gripping feed screw 18 Grinding stone gripping drive motor 19 Pinion 20 Ring gear 21 Main body 22 Feed screw 23 Bolt runner 24 Grinding stone gripping claw 25 Grindstone gripping cylinder

Claims (1)

[Claims] 1. An arm movable left and right, up and down, and front and back, and a grindstone exchanging head and a grindstone flange bolt exchanging head whose base end is attached to the arm so as to be rotatable about a parallel axis and rotatable about an up and down axis. An automatic grindstone replacement comprising: a grindstone flange bolt hole detecting means attached to the grindstone flange bolt replacement head; and an NC controller for operating the arm, the grindstone replacement head and the grindstone flange bolt replacement head. apparatus.