KR20050000697A - Apparatus for automatic centering between key hole of grinding wheel and key of grinding wheel change device in grinding machine - Google Patents

Abstract

PURPOSE: An automatic fitting device of a key groove is provided to simply and quickly replace a wheel, to reduce an operator's load and the danger of accidents and to improve the productivity by automatically confirming a key of a wheel replacing device to the key groove of the wheel. CONSTITUTION: An automatic groove fitting bearing(1) is arranged by having an inner wheel and an outer wheel and sticking a center weight(3) and a key groove guide(4) in the inner wheel. The bearing is installed by fixing the outer wheel in a wheel hanging ring(11) of a wheel handling device(10). A groove(22) to insert a guide portion of the key groove guide is formed in front of a wheel(20). A key groove(21) of the wheel is exactly fit to a key of a wheel replacing device by automatically maintaining the direction of the key groove in a prefixed direction. Thereby, the operation efficiency of a grinding machine is improved.

Description

Key groove automatic alignment device when grinding wheel is mounted {APPARATUS FOR AUTOMATIC CENTERING BETWEEN KEY HOLE OF GRINDING WHEEL AND KEY OF GRINDING WHEEL CHANGE DEVICE IN GRINDING MACHINE}

The present invention is a grinding machine for grinding the slab cast in the continuous casting process in the grinding wheel (grinding stone) replacement work worn by the grinding work in the grinding wheel automatically matching the key of the wheel and the wheel of the wheel changing device grinding wheel The invention relates to a device for automatically aligning a keyway when mounting a grinding machine wheel, which is configured to make the change work easier and more accurate.

Grinding machine according to the present invention is the wheel 20 by the spindle rotation motor 41 while pressing the grinding wheel 20 on the surface of the slab 60 by the spindle lifting and lowering cylinder 42 as illustrated in FIG. Since it is a facility for grinding the surface of the slab 60 by rotating the wheel grinding wheel 25 wear occurs, the wheel grinding wheel 25 is worn over the wheel 20 should be replaced. When replacing the wheel 20 of the grinding machine, the wheel 20 mounted on the spindle 40 is first removed by the wheel replacing device 30 as shown in FIG. A new wheel 20 assembly ready to be mounted on the wheel changer device 30 by the wheel handling device 10 and the hoist 14, and then the spindle 40 of the grinding machine by the wheel changer device 30. Will be refitted to the In this process, when the wheel 20 assembled to the ground is handled and mounted on the wheel changing device 30, the key 33 and the wheel 20 of the wheel changing device 30 as shown in FIG. Assembly is possible only when the key groove 21 is fitted correctly, but the operator adjusts the key groove 21 of the wheel 20 horizontally and then handles and assembles the wheel groove so that the key groove 21 does not become horizontal due to the handling. Since the key 33 of the wheel changing device 30 and the key groove 21 of the wheel 20 do not coincide, the handling operation must be repeated several times while adjusting the position of the key groove 21 of the wheel 20 little by little. A problem occurs, and when the wheel is fastened using the hook ring 11 and the hook ring 12 of the wheel handling apparatus 10 as shown in FIGS. After the groove is set in the horizontal direction, the hook work is performed. Therefore, it is inevitable that it takes a long time and manpower to change the wheel, thereby reducing the efficiency of the grinding machine work, as well as the operator to directly fit the key groove 21 to the wheel 20, which is heavy (about 120 Kg). In the process of turning to and fro, the risk of a safety accident was large, and there were problems such as a heavy load on the worker.

The present invention has been made to solve the conventional problems as described above, the key 33 of the wheel changing device 30 and the key groove 21 of the wheel 20 automatically and correctly at the wheel replacement operation of the grinding machine It is an object of the present invention to provide a device that allows the wheel to be matched more easily and quickly, thereby reducing the load on the operator, reducing the risk of safety accidents, and improving productivity.

Figure 1 (a) is a front view of the working state of the grinding machine according to the present invention, (b) is a side view,

2 is a side view showing a wheel changing operation state using the wheel changing device;

Figure 3 (a) is a side view showing the assembling relationship between the key of the wheel change device and the key hole of the wheel, (b) is a side view of a conventional wheel handling device, (c) is a state in which the wheel is mounted on the wheel handling device (A) is a side view of (c),

Figure 4 (a) is a perspective view of a key groove self-aligning bearing in the present invention, (b) is a partial cutaway perspective view of the bearing, (c) is a front view of the installation state of the bearing, (d) is an installation state of the bearing Side View,

Figure 5 (a) is a perspective view showing the front side configuration of the wheel configured to cooperate with the bearing, (b) is a front view of the coupling state of the bearing and the wheel, (c) is the wheel handling device installed with the bearing The front view of the state which mounted the wheel, (D) is the side view of (C).

Explanation of symbols on the main parts of the drawings

1 bearing 2 bearing inner ring 2-1 bearing outer ring

3: center weight 4: keyway guide 4-1: fixing part

4-2: elastic portion 4-3: guide portion 4-4: roller

5: rolling bearing 10: wheel handling device 11: hook ring

12 hook hook 13 spring hook 14 hook

20: grinding wheel 21: key groove 22: groove

25 grindstone 30 wheel change device 33 key

41: spindle rotation motor 42: spindle up and down cylinder

60: slabs

Hereinafter, with reference to the accompanying drawings, the present invention for achieving the above object will be described in detail.

The present invention is provided with the key ring self-aligning bearing (1) configured as shown in Figure 4 (a), (b) to the hook ring 11 of the wheel handling device 10 as shown in (c), (d) It is composed.

The bearing 1 has an inner ring 2 and an outer ring 2-1, and the inner ring 2 has a configuration in which a center weight 3 and a key groove guide 4 are attached to the inner ring 2 in the illustrated embodiment. .

The key groove guide 4 is configured by integrally connecting and installing the fixing portion 4-1, the elastic portion 4-2, and the guide portion 4-3 as shown in (e) of FIG. The elastic portion 4-2 is configured in the form of a leaf spring to cause elastic displacement in the vertical direction, and the guide portion 4-3 is disposed on the front surface of the wheel 20 as shown in FIG. It is produced to a size that can be inserted into the formed groove (22). This is for the guide part 4-3 to be easily inserted into the groove 22 of the wheel 20 by the elasticity of the elastic part 4-2. A roller 4-4 capable of rolling is installed below the guide part 4-3.

The bearing 1 thus made has a bearing outer ring 2-1 on the hook ring 11 of the wheel handling device 10 as shown in (c) and (d) of FIG. 4. Fix and install. The rolling bearing 5 is installed at the end of the hook ring 12 supporting the wheel rear portion of the wheel handling device 10.

Referring to the operation and effects of the present invention configured as described above are as follows.

Regardless of the direction of the groove 22 of the wheel 20 to be replaced and mounted as shown in FIGS. 5B to 5D, the wheel 20 is hooked with the hook ring 11 portion of the wheel handling device 10. After mounting between the ring (12) to fasten the coupling spring ring (13). In this case, the hook ring 11 and the hook ring 12 are forced inwards, and when the operator grasps the center weight 3 of the bearing 1 and turns it regardless of the direction, the center weight 3 ), The bearing inner ring (2) is fixed, and the key groove guide (4) attached to the bearing inner ring (2) also rotates, so that the key groove guide (4) of the wheel (20) When the groove 22 is reached, the guide portion 4-3 of the key groove guide 4 moves to the groove 22 of the wheel 20 due to the elasticity of the elastic portion 4-2 of the key groove guide 4. Will be inserted into. At this time, the roller 4-4 assembled under the guide portion 4-3 of the key groove guide 4 is compressed to the front surface of the wheel 20 by the elastic portion 4-2 during the rotation operation as described above. It serves to smoothly rotate the guide portion 4-3. When the wheel handling device 10 supporting the wheel 20 is lifted up using the hoist 14 (refer to (d) in FIG. 2), the center weight 3 is released when the wheel 20 falls off the ground. The key groove guide (4) is also automatically leveled as the downward downward force due to gravity, and thus the wheel (20) in which the front groove (22) is naturally held by the key groove guide (4). The key groove 21 of the wheel 20 and the key 33 of the wheel changing device 30 can be precisely matched with each other at a time by being in the same position as in 5 (c).

Therefore, according to the present invention as described above, the wheel 20 by automatically maintaining the direction of the key groove 21 of the wheel 20 to be replaced during the wheel 20 replacement operation in the grinding machine automatically set in a predetermined direction And assembly of the key groove 21 of the wheel 20 and the key 33 of the wheel changing device 30 at a time when assembling between the wheel changing device 30 and the wheel changing device 30. It is possible to improve the efficiency and to reduce the load of workers and the occurrence of safety accidents.

Claims (1)

A key groove self-aligning bearing (1) having an inner ring (2) and an outer ring (2-1) attached to the inner ring (2) by attaching and installing a center weight (3) and a key groove guide (4) is provided. (1) is installed in the wheel hanger ring 11 of the wheel handling device 10 by fixing the outer ring (2-1) of the bearing (1) to the ring 11, the key on the front side of the wheel (20) A device for automatically aligning a key groove when the grinding machine wheel is mounted by forming a groove (22) into which the guide portion (4-3) of the groove guide (4) can be inserted.