JP2593717B2 - Grinding angle setting mechanism of planer blade in polishing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planing angle setting mechanism for a planer blade in a grinder for polishing a blade such as an electric planer.

[Conventional technology]

The grinding machine has a disk-shaped rough whetstone on one end of the motor rotating shaft,
There is a structure in which a cup-shaped finishing wheel is attached to the other end, and a structure in which a cup-shaped rough grinding wheel and a finishing wheel are attached to both ends of a motor rotating shaft.

Japanese Patent Publication No. 57-58260 discloses a polishing machine having a disk-shaped rough grindstone attached to one end of the motor rotation shaft and a cup-shaped finishing grindstone attached to the other end. This is the finishing angle (β
+ Α) by tilting the motor downward toward the turret by α ゜ (the angle difference between rough grinding and finish grinding), so that the turret is first set to β ゜ and the side of the finishing grindstone. By rotating the motor so that the end faces the tool rest, the inclination angle becomes (β ゜ + α ゜), and the finishing angle of the finishing whetstone is obtained automatically.

[Problems to be solved by the invention]

The above effect can be achieved by a polishing machine using a disk-shaped rough grinding wheel which does not affect the polishing angle at the time of rough cutting even when the motor is tilted when polishing with a rough grinding wheel, and the motor rotation In the case of a polisher with a cup-shaped rough grinding wheel and a finishing wheel attached to both ends of the shaft, when polishing the blade, rotate the motor so that the end plane of the cup-shaped grinding wheel faces the turret in both rough grinding and finish grinding. Because of this, the angle difference between the rough ground surface and the finished ground surface could not be made, and the motor could not be tilted.

The present invention eliminates the disadvantages of the prior art described above, and also in a polishing machine in which a cup-shaped rough grinding wheel and a finishing grinding wheel are attached to both ends of a motor rotating shaft, the difference in angle between the rough grinding surface and the finishing grinding surface can be reduced. The purpose of the present invention is to provide a mechanism that can be set by using a low cost.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a cup-shaped rough grindstone and a finishing grindstone attached to both ends of a rotating shaft of a motor supported on a head, and a grinding surface of the grindstone can alternately face a tool post. In the above-mentioned polishing machine, the motor rotating shaft is inclined by α ゜ / 2 with respect to the motor lower rotating surface.

[Action]

Set the tool post to the angle (β ゜ + α ゜ / 2) during rough grinding.
By adjusting the angle of the tool rest to β ゜ + α ゜ / 2, the inclination angle of the motor 1 becomes -α ゜ / 2, and the tool is roughly ground to the angle β ゜. Next, in the case of finish grinding, when the motor is rotated, the blade is polished at an angle (β ゜ + α ゜ / 2 + α ゜ / 2), and the angle difference α ゜ between the rough ground surface and the finish ground surface is automatically adjusted. can get.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a side view showing one embodiment of a rough grinding operation state of a polishing machine according to the present invention, FIG. 2 is a side view showing a finish grinding operation state, and FIG. 3 is rough grinding of a plane blade by a rough grinding wheel. FIG. 4 is an enlarged view showing a finish grinding state of the planer blade by a finishing whetstone.

In the figure, a support 2 is provided on a base 1, and a tool post 4 is provided slidably to the left and right by using a rail 3 formed on the support 2 as a guide. A rack 5 is provided on the lower surface of the tool rest 4, and the rack 5 is engaged with a pinion 7 provided on a shaft of a handle 6 provided on the front surface of the base 1. Tool post 4
Is configured to be tiltable about the shaft 8. On the tool rest 4, a tool 9 is clamped and fixed on the tool rest 4 by a tool holder (not shown). Arranged behind the upper part of the base 1 is a rough grindstone 10 facing the tool rest 4, a cup-shaped finishing grindstone 11, and a head portion 14 composed of motors 12, 13 for rotating the respective grindstones 10, 11 and the like. ing.

In FIG. 1, a cup-shaped rough grindstone 2 is attached to one end of a motor 1 and a cup-shaped finishing grindstone 3 is attached to the other end. The rough whetstone 2 and the finishing whetstone 3 are wheel covers 4,
It is covered with a foil cover 5.

The motor 1 is horizontally rotatably fitted to the motor receiver 6, and the rotation axis of the motor 1 is inclined by α 傾斜 / 2 with respect to the motor rotation surface 20 of the motor receiver 6. The motor cradle 6 is dovetail-fitted to the bed 14. Further, a feed screw 18 is screwed into the motor receiving base 6, and the handle 17 allows the motor receiving base 6 to move back and forth.

A table 13 is placed on the bed 14, and a rack 19 is provided on the lower surface of the table 13.The rack 19 meshes with a pinion 16 provided on a shaft of a handle 15 provided on the front of the table 13, and the table 15 is rotated by rotating the handle 15. 13 can slide back and forth.

The tool rest 9 is fitted to the table 13 by a shaft 12 press-fitted into the tool rest 9, and the tool rest 9 is rotated around the shaft 12 and fixed by the knob bolt 11. A tool holding plate 8 is attached to the tool rest 9 with mounting bolts 10, and the tool 7 is fixed between the tool holding plate 8 and the tool rest 9.

In the above-described configuration, when the blade 7 is polished, first, as shown in FIG.
゜ / 2). Next, the motor 1 is rotated so that the end flat surface of the rough whetstone 2 faces the tool post 9. Motor 1
Is driven to rotate the rough grindstone 2, the rough grindstone 2 is brought into contact with the blade 7 with the handle 17, and the table 13 is reciprocally slid with the handle 15 to perform rough grinding work. At this time, the angle of the tool rest 9 is β ゜ + α ゜ / 2, the inclination angle of the motor 1 is -α ゜ / 2, and the blade 7 is roughly ground to the angle β ゜.

In the case of finish grinding, the motor 1 is rotated so that the end flat surface of the finish grindstone 3 faces the tool post 9 as shown in FIG.

Similar to the rough grinding operation, the motor 1 is driven to
Is rotated, and the finishing whetstone 3 is applied to the blade 7 with the handle 17,
When the table 13 is reciprocally slid with the handle 15 to perform finish grinding, as shown in FIG. 4, the blade 7 is angled (β ゜ + α ゜ / 2 + α).
研磨 / 2), the angle difference α ゜ between the rough ground surface and the finished ground surface is automatically obtained.

Generally, in an automatic plane blade and an electric plane blade, the angle β ゜ of the rough ground surface is 40 ° and the angle β の + α ゜ of the finish ground surface is 42 °.

In the case of a super-finished planer blade, the angle β 荒 of the rough ground surface is 30 °, and the angle β ゜ + α 研 削 of the finish ground surface is 32 °.

Therefore, α ゜ = 2 ゜, and in the polishing machine according to the present embodiment, the inclination angle between the motor rotation surface and the motor rotation shaft is set to α ゜ / 2 = 1 ゜.

〔The invention's effect〕

According to the present invention, in a polishing machine having a cup-shaped rough grindstone and a finishing grindstone at both ends of the motor, the motor rotating shaft is inclined by half the angle difference between the rough grinding surface and the finished grinding surface with respect to the motor rotating surface. With only the structure, the difference in the grinding angle of the planer blade can be provided with an inexpensive structure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing an embodiment of a rough grinding operation of a polishing machine according to the present invention, FIG. 2 is a side view showing a finish grinding operation state, and FIG. FIG. 4 is an enlarged view showing a rough grinding state of the planer blade according to FIG. 4, and FIG. 1 is a motor, 2 is a rough whetstone, 3 is a finishing whetstone, 4 and 5 are wheel covers, 6 is a motor cradle, 7 is a tool, 8 is a tool holding plate, 9 is a tool rest, 10 is a mounting bolt, and 11 is a knob bolt. , 12
Is a shaft, 13 is a table, 14 is a bed, 15 and 17 are handles, 16 is a pinion, 18 is a feed screw, 19 is a rack, and 20 is a motor rotating surface.

Claims (1)

(57) [Claims] 1. A cup-shaped rough grindstone and a finish grindstone are attached to both ends of a rotating shaft of a motor supported on a bed, respectively.
In a polishing machine having a rotating surface at a lower portion of the motor so that a grinding surface of the whetstone can be alternately opposed to a tool post, a motor rotating shaft is set at α ゜ / A grinding angle setting mechanism for planer blades in a polishing machine characterized by two inclinations.