JPH0239763Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a saw wheel polishing device for polishing the upper and lower saw wheels of a band saw machine while they are set in the machine.

[Conventional technology]

Generally, in a sawmill, when processing wood into a predetermined width, a band saw machine is used to cut the wood.

This band saw machine has an endless band saw attached to saw wheels attached to the top and bottom of the frame, and the band saw is rotated by the driving force of a motor, and the wood is applied to the saw wheels to cut the wood.

However, bandsaws are made of steel;
During long-term use, the upper and lower saw wheels that contact and rotate the band saw gradually wear out.

In particular, band saws are set on the saw wheel by applying tension to the cutting edge side, and the width gradually becomes narrower due to the polishing of the cutting edge, so the upper and lower saw wheels that come into contact with this gradually wear out into a tapered shape on one side. .

If you cut the wood with local wear on one side, the part at the beginning of the cut, which is usually called a nose bend, will become sagging, and the middle part will also become undulating, causing the post material to become wavy. This becomes a problem when processing.

If one side of the saw wheel is worn out in this way, remove the upper and lower saw wheels from the frame and take them to a polishing factory, where they are set in a special polishing machine to polish the worn side to a flat surface, and then reinstall. It is then transported to a sawmill and attached to a frame.

However, the upper part of the saw wheel shaped like a bicycle wheel weighs about 70 to 80 kg, and the lower saw wheel shaped like a flywheel that serves as the drive wheel weighs about 150 kg.
It takes about 10 workers to remove it from the frame, and transportation is also difficult. Furthermore, in the polishing factory, it takes manpower to set the heavy saw wheel on the polishing machine, and the cost is high because polishing is done using a polishing machine equipped with a large-capacity motor. Unable to perform cutting work,
The loss was extremely large.

[Problems to be solved by the invention] The present invention improves the drawbacks of the conventional polishing method described above, and uses the power of the band saw machine itself to perform short cutting on the job site while the upper and lower saw wheels are set on the band saw machine. It is an object of the present invention to provide a saw wheel polishing device that can be polished in a small amount of time and at low cost.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

1 to 3 show an embodiment of the present invention. In the figures, 1 is a band saw machine, and a polishing device 3 is mounted on a processing table 2. FIG.

The band saw machine 1 has a flywheel-shaped lower saw wheel 5 attached to the lower part of the frame 4, and the upper part includes:
A bicycle wheel-shaped upper saw wheel 6 is attached. The upper saw wheel 6 is constantly urged upward by the lever action of a lever 8 to which a weight 7 is attached, and the band saw is hung between the lower saw wheel 5, which serves as a driving wheel, and the upper saw wheel 6, which serves as a driven wheel. It is designed to add tension to 9.

As shown in an enlarged view in FIG. 2, the polishing device 3 includes:
An X-Y table 11 is installed obliquely on the support base 10, and a grinder 12 is fixed to the upper tip of the X-Y table 11.

In the support stand 10, both ends of a rotary stand 14 having a plurality of bolt insertion holes 13 formed in the center thereof are rotatably supported on support frames 15, 15, and the upper surface of the support stand 10 is rotated at an arbitrary angle. It is designed so that it can be tilted and fixed.

An XY table 11 is fixed at a predetermined position on the support base 10 by bolts (not shown) passed through bolt insertion holes 13.

The X-Y table 11 has a horizontal slide moving in the X direction on a vertical slide table 16 set in the Y direction, where the direction parallel to the band saw surface is the X direction and the direction perpendicular to this is the Y direction. A table 17 is attached.

The vertical slide table 16 has a handle 18.
A feed screw 19 connected to the feed screw 19 is attached so that the upper horizontal table 17, which is screwed into the feed screw 19, can be moved back and forth to any desired position.

In addition, the horizontal slide table 17 has a motor 2.
A feed screw 21 connected to the feed screw 21 is attached, and a slide plate 22 that is screwed onto the feed screw 21 and moves in the X direction is attached. This slide board 2
A mounting shaft 23 is provided at the rear of the band saw 2, and a limit 24, whose position can be adjusted according to the width of the bandsaw 9, is provided on the mounting shaft 23.
24 is attached, and limit switches 25, 25 are attached to the left and right sides of the horizontal slide table 17.
It is starting to come into conflict with the

Furthermore, there is an L-shaped mounting base 2 on the top of the slide plate 22.
6 is fixed, and a motor 27 for driving the grinder 12 is attached to the tip of this mount 26.

The polishing device 3 also includes a support stand 10, a horizontal slide table 17 thereon, and a grinder 12.
The total mounting width of the frame 4 of the band saw machine 1 is
and the band saw 9, so that it can be placed on the processing table 2 even when the band saw 9 is set.

[Effect]

Next, a method of polishing the saw wheels 5 and 6 using the polishing device 3 will be described.

First, when polishing the upper saw wheel 6, as shown in FIGS. 1 and 2, the base 28 having legs is placed on the processing table 2 with the band saw 9 still being hung. The polishing device 3 is mounted on the legs with the height adjusted.

Further, as shown in FIG. 2, the L-shaped mounting base 26 for fixing the grinder 12 is fixed to the slide plate 22 so that the vertical portion thereof faces upward. Also X-Y
The table 11 has a grinder 12 and an upper saw wheel 6.
The rotary table 14 is positioned almost on the same plane as the rotary table 14.
Fix it with bolts. Further, the angle of the rotary table 14 is adjusted, and the handle 18 of the vertical slide table 16 is rotated to bring the tip of the grinder 12 into contact with the upper saw wheel 6 for positioning. Further, the limits 24, 24 are positioned according to the width of the upper saw wheel 6.

Next, the motor 27 is rotated, and while the grinder 12 is rotated, the table drive motor 20 is also rotated. The rotational force of the motor 20 is transmitted to the feed screw 21, the slide plate 22 screwed thereon moves in the X direction, and when the limit 24 collides with one limit switch 25, the rotation direction of the feed screw 21 is reversed. Then, the slide plate 22 returns. In this way, the grinder 12 grinds while reciprocating in the X direction by the width of the upper saw wheel 6.

On the other hand, the band saw machine 1 performs the following operations in the same way as during normal processing.
Driven by a motor (not shown), the rotational force of the lower saw wheel 6 is transmitted to the upper saw wheel 5 by the band saw 9, and while this is rotated at high speed, the grinder 12, which rotates in the opposite direction, uniformly spreads over the entire circumference. Polish it to

When grinding the lower saw wheel 5, as shown in FIG. 2
8 is removed and the polishing device 3 is placed directly on the processing table 2. Thereafter, the angle of the rotating table 14 is adjusted to bring the tip of the grinder 12 into contact with the upper part of the lower saw wheel 5.

In this state, while operating the band saw machine 1 and rotating the lower saw wheel 5, the motors 20 and 27 of the grinding device 3 are rotated in the same manner as described above, and while the grinder 12 is reciprocated in the X direction, the lower saw wheel 5 is rotated. Polish the outer periphery evenly.

In the above embodiment, an L-shaped plate material was used as the mounting base 26 for connecting the grinder 12 to the slide plate 22, and the mounting direction was reversed when grinding the upper and lower saw wheels 5, 6. A mounting base whose angle can be adjusted may also be used.

[Effect of idea]

As explained above, the saw wheel polishing device according to the present invention is a small and lightweight polishing device that can be easily carried to the site, and can be left in operation without removing the upper and lower saw wheels from the band saw device. Because it can be polished,
There is no need for removal or transportation as in the past, and polishing can be completed in a short time without any manual effort.

Moreover, since the upper and lower saw wheels are kept rotating under normal operating conditions, this rotational force is used, and since the grinder is rotated in the opposite direction, the relative circumferential speed increases, and the motor used The capacity is less than half that of conventional polishing equipment, and the entire equipment is small, lightweight, and inexpensive.

Furthermore, the equipment can be made more compact, and by tilting the top surface of the support base that supports the X-Y table and narrowing its width, the band saw that transmits the rotational force to the upper saw wheel can be mounted on the processing table. It can be installed and polishing work can be performed on-site.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the polishing device of the present invention set in a band saw machine and polishing the upper saw wheel;
FIG. 2 is an enlarged perspective view of the polishing device shown in FIG. 1, and FIG. 3 is a perspective view of the polishing device showing a state in which the lower saw wheel is being polished. 1... band saw machine, 2... processing table, 3...
Polishing device, 4...Frame, 5...Lower saw wheel, 6
... Upper saw wheel, 9 ... Band saw, 10 ... Support stand, 1
1...X-Y table, 12...Grinder,
16... Vertical slide table, 17... Horizontal slide table, 22... Slide plate, 25...
Limit switch, 26...Mounting base, 20, 27
……motor.

Claims (1)

[Scope of utility model registration request] Processing between the frame and the band saw that passes through the processing table of a band saw machine in which an endless band saw is hung on saw wheels attached to the top and bottom of the frame, and wood is cut on the processing table that the band saw passes through the top and bottom. Attach a support stand on the table, and place an X on this support stand.
-A Y-table is mounted so as to be rotatable up and down, and a table driving motor is connected to the horizontal slide table of the X-Y table that moves along the axial direction of the saw wheel. It is supported so that it can reciprocate within a predetermined range in the width direction, and the grinder is connected to this horizontal slide table via a mounting base, and the vertical slide table of the X-Y table is adjusted to move the grinder around the outer circumference of the saw wheel. A polishing device for a saw wheel characterized by contact.