JPS593792Y2 - Grindstone dressing device for band sawtooth sharpening machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a grindstone dressing device for dressing the grinding surface of a band sawtooth grinding wheel in a band sawtooth Hitachi machine into a predetermined shape.

Conventionally, the grinding surface of the band saw blade grinding wheel was dressed by hand-held work using a dresser or brick, but this method was not only dangerous but also required skill. Conventional dressing devices equipped with a copying mechanism for making a bar-shaped dresser follow the grinding surface of a grindstone have the drawbacks of complicated mechanisms and operations, and high costs.

SUMMARY OF THE INVENTION In view of the above drawbacks, an object of the present invention is to provide a grindstone dressing device for a band saw blade Hitachi machine that can accurately and easily dress a band saw blade grinding wheel.

Next, an embodiment of the present invention will be described according to the drawings. In the drawing, 1 is a slide base attached to the upper surface of the frame F of the band sawing machine, It is disposed close to a grinding wheel T for band saw tooth grinding which is rotatably supported by a shaft and raised and lowered via an elevating bundle H, and a slide groove 1a having a U-shaped cross section is recessed in the longitudinal direction on its upper surface.

Reference numeral 2 denotes a slide par arranged horizontally movably in parallel to the slide base 1, which is fitted into the slide groove 1a of the slide base 1 and has an adjustment hole 2a extending horizontally through the center thereof. Grinding wheel T to slide base 1 through
It is fastened with a set screw 3 so as to be able to approach and retreat from the grinding surface T1, and a through hole 4 is provided horizontally through a projecting piece 2b projecting from the upper surface of the right end in the figure.

Reference numeral 5 denotes a flat L-shaped fixing piece fixed near the center of the top surface of the slide base 1 via a screw 6.6, and extends above the slide par 2 at its upper right end. A screw hole 7 is provided horizontally in the center of the arm portion 5a.

8 is a feed screw that is fitted into the through hole 4 of the sliver 2 and screwed into the tapped hole 7 of the fixing piece 5, and is located between the bundle 9 and the snap ring 10 attached to the right end of the screw. The slider 2 can be moved and adjusted in the horizontal direction by holding the protruding piece 2b and rotating the bundle 9.

Reference numeral 11 denotes a shoe-shaped dresser attached to the side surface of the left end of the slide par 2 as shown in the figure, and a right mounting screw 12 a is inserted into a long hole 11 a extending in an arc shape near the right end of the dresser.
and the left mounting screw 12b on the left side.
A grindstone dressing part 11 is fastened so as to be adjustable in tilt with b as a fulcrum, and the grinding surface T1 of the grindstone T is fitted into the upper surface near the center of the grindstone dressing part 11, and diamond abrasive grains are condensed on the inner surface in order to dress the grindstone T. b is the grinding surface T1 of the grindstone T
When the slide par 2 is advanced and the shoe-shaped dresser 11 is replaced with a Hitachi sawtooth and is opposed to the whetstone T, the whetstone dressing part 11b of the dresser 11 becomes the whetstone. The grinding surface T1 can be ground by adjusting the tilting angle to suit the grinding surface T1 of the T.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, on the slide base 1 provided on the frame F of the band saw tooth Hitachi machine, the slide par 2 is arranged in parallel so as to be able to approach and retreat from the grinding wheel T for band saw tooth sharpening. A shoe-shaped dresser 11 having a grindstone dressing 11b formed for dressing the grindstone T is mounted so as to be tiltable in accordance with the grinding surface T1 of the grindstone T, and the grindstone dressing part 11b is formed for dressing the grindstone T. Side T
A feed screw 8 is provided to make it come into contact with the workpiece.

Therefore, when dressing the whetstone T, the slide par 2 is advanced to the left in the drawing with respect to the slide base 1 so that the whetstone dressing part 11 b of the shoe last dresser 11 faces the whetstone T, and then the whetstone dressing part 11
Adjust the tilt of the prime dresser 11 and tighten it so that b can grind the grinding surface 〒1 of the grinding wheel T at an appropriate grinding angle, and rotate the grinding wheel lifting bundle H to lower the grinding wheel T while lowering the bundle 9. When the grinding surface T1 of the whetstone T is brought into contact with the whetstone dressing part 11b of the Prime Dresser 11 by rotating,
The grinding surface T1 of the whetstone T can be ground and dressed into a predetermined shape that matches the appearance of the band saw teeth.

In addition, when sharpening the band saw teeth, if the slide par 2 is retracted to the right in the figure and separated from the grindstone T, a place for attaching the band saw teeth is secured, and the saw tooth sharpening work can be performed without any trouble.

Therefore, when the slide base 2 approaches the grindstone T, the grindstone dressing part 11 of the shoe last dresser 11
b and the grinding surface T1 of the whetstone T can be constantly ensured to dress the whetstone T uniformly and precisely, eliminating dressing defects and uneven dressing and allowing the whetstone to reproduce an appropriate grinding surface. Furthermore, it has the feature of significantly improving the accuracy of the adjustment by Hitachi.

In addition, it is possible to safely dress the whetstone T by eliminating the dangers associated with hand-held grinding, and it is also possible to finely adjust the amount of grinding on the whetstone T, which causes wear and tear on the whetstone due to excessive grinding. This has the effect of eliminating problems that accelerate the grinding process and increasing the durability of the whetstone.

That is, the present invention provides a shoe-shaped dresser that has a concave shape that relatively matches the shape of the grinding surface of the band saw tooth grinding wheel and has a grindstone dressing part on the inner surface of the concave portion. The grinding wheel can be dressed accurately and easily by being mounted on the slide base provided on the Hitachi machine and equipped with an adjustment mechanism and a feeding mechanism for dressing the grinding wheel so as to be in contact with the grinding surface of the grinding wheel. At the same time, since it can improve grinding accuracy, it is an extremely practical idea as a grindstone dressing device for a band sawtooth sharpening machine.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view showing the main parts of a band saw blade Hitachi machine, FIG. 2 is a plan view of a grindstone dressing device, and FIG. 3 is a side view. 1...Slide base, 2...Slide par, 11...Shoe shaped dresser, 11 b.
...Whetstone dressing part, T...Whetstone,
T1...Grinding surface.

Claims (1)

[Scope of utility model registration request] A shoe-shaped dresser having a concave shape that relatively matches the shape of the grinding surface of the band saw tooth grinding wheel and having a grindstone dressing part on the inner surface of the concave portion is installed on the band saw tooth Hitachi machine so that it can approach and avoid the grinding surface of the grinding wheel. A dressing device for a band sawtooth grinding wheel, which is mounted on a slide base, and is equipped with an adjustment mechanism and a feeding mechanism for dressing the grinding wheel so as to be in contact with the grinding surface of the grinding wheel.