JPS6171915A - Polishing machine for bandsaw sides for smooth surfaces thereof - Google Patents

Abstract

PURPOSE:To smooth a sawed surface of a workpiece by cutting into a serration with use of a pair of whetstones adjusted to a set width and a set angle of the serration making the side surfaces of the serration completely parallel, and polishing them to form a prescribed set angle. CONSTITUTION:A serration 3' to be polished of a bandsaw 3 fed by bandsaw feed means 42, 40, 37, and 38 is stopped in front of a pair of whetstones 28 staying at a waiting position. The whetstones are fed to a position of polishing by means of first means 33, 16, 8, 10, and 17, and forced to cut into sides of the serration. Then, operated second feed means 35, 29, 30, 32, 31, and 17, the whetstones are moved along a serration throat until they are disengaged from the serration. Accordingly, the serration is polished so as to have both sides of the serration throat made to be parallel and have a constant width thereof. Thus, the bandsaw so polished smooths the surface of a workpiece.

Description

DETAILED DESCRIPTION OF THE INVENTION G) Industrial Field of Use The present invention relates to a polishing machine for polishing the side surfaces of saw teeth in a band saw for lumber. More specifically, the present invention relates to a side polisher for a band saw, which polishes the side surfaces of the saw teeth so that the widths of the teeth are perfectly aligned to obtain a smooth and beautiful sawn surface.

(B) Prior art The band saw saw IJ used in the lumber industry has a drum shape as seen from 1- in Fig. 20 and as seen from the front in Fig. 27. As shown in Fig. 17, a pair of grinding wheels R with an included angle matching the set angle,
As shown in the same figure, press R against the saw tooth from both sides to polish the sides of the saw tooth. After polishing, as shown in Figure 1g, open the gap between grinding wheels a and a and send the band saw C. When the sawtooth to be polished is converted, the grinding wheel a.

A is pressed against the sawtooth to polish it and align the clams into a drumstick shape.

(→Problem to be solved by the invention) However, when sawing timber using the band saw C that employs the above-mentioned batchi saw, fine triangular grooves d and d as shown in Figure 22 of the drawing are formed on the surface of the sawn timber. Not only does it remain in a pinch, making the sawn surface uneven and rough, but also the band saw's direction is not regulated in the batchi saw, so there is a problem in that the sawing tends to bend.

Therefore, the present invention solves the conventional problems described in 1'\i1 by polishing the sides of the saw band so that the tooth throat widths are completely aligned.
The purpose is to provide a one-rule surface grinding machine for band saws that greatly improves the commercial value of sawn timber.

2) Technology for solving the problems The band saw side polishing machine for smooth sawn surfaces according to the present invention includes a pair of grinding wheels whose spacing and included angle are set according to the sawtooth cutting;
a first feeding means for alternately positioning these grinding wheels in a standby position and a grinding position behind the saw teeth, and a grinding wheel held in the grinding position by the first feeding means in front of
8! The device is equipped with a second feeding means for moving the sawtooth along the throat of the sawtooth until it comes off the sawtooth and returning, and a saw feeding means for feeding the band saw to change the grinding tooth when the grindstone is not being ground.

(E) Operation When the saw tooth to be ground of the band saw sent to the saw feeding means is one step in front of the grinding wheel in the waiting position, the grinding wheel is sent to the grinding position by the first feeding means and the saw tooth is At this time, the second feeding means is activated to move the grinding wheel, which is grinding both sides of the saw tooth, along the tooth throat until it comes off the saw tooth.

Therefore, both sides of the tooth throat of the saw tooth are ground parallel to each other, and the tooth throat is ground to a constant width from the tooth tip to the tooth root, and the required upper tooth advance angle is set by the included angle of the pair of grinding wheels. The grinding wheel, which is given and has been removed from the saw tooth, is moved from the grinding position to the standby position by the first feeding means, and the second feeding means returns the grinding wheel, which has been removed from the saw tooth, to the position of the saw tooth. During this time, if you send out the band saw using the saw feeding means and change the saw teeth that have been ground and the saw teeth that have not yet been ground, you will be able to properly learn the 10-tooth clearance angle by aligning the tooth throats of a large number of saw teeth with a constant width. It can be polished continuously.

(f) Implementation Example A band saw side polishing machine for smooth sawn surfaces according to the present invention is shown in drawing 1.
This is carried out as shown in Figures 1 to 2.

1 and Ω of the drawings, 1 is a frame, in front of which a band saw 3 is sent out between a holding member 2 and a holding member 2.
A feeding saw section 4 is provided which is supported by the support section 1, and the feeding saw section 4 is provided at the lower part.
A camshaft 5 is provided which is perpendicular to the camshaft 5, and two lever shafts 6 and 7 which are parallel to the camshaft 5 are disposed above the camshaft 5.

Reference numeral 8 denotes a fan-shaped swing plate having a mounting tube 9 fitted to one end side of the one lever shaft 7 described above, and a similar fan-shaped adjustment plate 10 on the negative side thereof.
The adjusting plate 10 and the rocking plate 8 are attached to each other so as to rotate around a fan-shaped central axis [ ], and the adjusting plate 10 and the swinging plate 8 are integrated by tightening with a bolt 13 having an arc-shaped elongated hole 12 inserted therethrough. On the rear side of the adjustment plate 10, a support shaft 14 of a grinding wheel holder, which will be described later, protrudes from the shaft support cylinder 15, and below the swing plate 8, the tip thereof is attached to one side of the camshaft 5 described above. A corresponding first grinding wheel feed 16 is provided.

Reference numeral 17 denotes a grinding wheel holder which is rotatable in the vertical direction by fitting the rear mounting cylinder 18 onto the above-mentioned support shaft 14, and a pair of grinding wheel holders located on the left and right sides above the above-mentioned feeding saw section 4 are provided at the front part of the grinding wheel holder. As shown in FIG.
The arcuate elongated hole 2 of the halter 17 is centered on the hole 2],
The motor bases 1.9 and 1.9 are mounted so that the relative angle can be freely adjusted by using the poles 1-22 and 22 passed through the motor bases 1.9 and 1.9. Provide guides 23.23 in the direction of these guys) 2
3, 23 and sliding plates 25, 2 which are moved back and forth by adjusting screws 24, 24! 'l to engage these sliding plates 2fi
, 2! The motors 27 and 27 with the shafts 26 and 26 facing inward are attached to the +, and the horn-shaped grinding wheels 28 and 28 are attached to the shafts 26 and 26 of these motors 27 and 27 so as to insert the band saw 3. The grinding wheels 28, 28 can be adapted to the setting of the saw teeth 3' of the band saw 3 by adjusting the angle and spacing of the motor stands 19, 28 and 9, as shown in FIG. 3 of the drawing.

Reference numeral 29 designates a second grinding wheel feed lever that is loosely engaged with the lever shaft 7 described above, and as shown in Figure 2 of the drawing, its lower end corresponds to the cam shaft 5, and a small collar 30 is provided upwardly protruding. This small lever 30 and a small lever 31 protruding below the mounting tube 18 of the grinding wheel holder 17 are connected by a loridor 32.

Reference numeral 33 designates a first cam numbered on the cam shaft 5 described above in correspondence with the first feed lever 16, and a roller 34 attached to the lever 16 is in contact with the lower part of the first cam, as shown in Figure S of the drawings. At this time, the grinding wheels 28, 28 are positioned behind the saw teeth 3' as shown by the dotted line in the figure, and when the roller 34 comes into contact with a high place, the grinding wheels 28, 28 are positioned as shown by the chain line in the figure. The shape is determined so as to make a cut into the sawtooth 3'.

Reference numeral 35 denotes a second cam attached to the aforementioned cam shaft 5 in correspondence with the second feed lever 29, and a roller 36 attached to the bar 17 and attached to the shaft comes into contact with the lower part of the second cam, as shown in Figure 2 of the drawing. At this time, the grinding wheels 28 and 28 are set to the sawtooth 3 as shown by the solid line in the same figure.
The shape is determined so that when the roller 36 comes into contact with a high place, the grinding wheels 28 and 28 are moved to a position where they are removed from the saw teeth 3' as shown by the chain line in the figure. be.

Reference numeral 37 is a feeder of the band saw 3 which is attached to the other lever shaft 6 facing upward as shown in FIG. It is movably mounted on a shaft 39.

Reference numeral 40 denotes a saw feed lever attached to the lever shaft 6 facing downward as shown in FIG. 42, and the shape of the cam 42 is set so as to give the above-mentioned feed pin 38 a reciprocating motion equivalent to sawtooth/pitch.

To polish the side surface of the saw tooth 3' using the side polisher of the band saw shown in the embodiment, first, as shown in Figure 1, screws for fixing the fan-shaped swing plate 8 and the fan-shaped adjustment plate 10 are removed. ■ 13
When the adjustment plate 10 is rotated to the left in the figure around the support shaft 11, the depression angle of the grinding wheel holder 17 attached to the adjustment plate 10 by the support shaft 14 becomes large; This changes the inclination of the grinding wheels 28, 28 supported by the grinding wheel holder 17 with respect to the saw teeth 3'. Both in the case of , and in the small case of Fig. 13, the inner circumference can be adjusted so that it is parallel to the tooth throat.
When this adjustment is completed, the screw 13 is tightened to fix the adjustment plate 10 and the swing plate 8, and the grinding wheel 28 is moved by the motor 27°27.
, 28, the camshaft 5 rotates the first, second, and
each third cam 33 , 35 ;

42, the third cam 42 moves the saw feed lever 4
0 is driven and the band saw 3 is sent out by a sending pin 38 which is pivoted on a sending metal 37, and the saw teeth 3' are sent to the polishing position and returned.

Then, the first cam 33 drives the first grinding wheel feed lever 16, and moves the sector-shaped swing plate 8, sector-shaped adjustment plate 10, and grinding wheel holder 17 from the position shown by the solid line in Figure S to the position shown by the chain line. Since the grinding wheels 28, 28, which were positioned behind the saw tooth 3' as shown in Fig. 1 of the drawing, move to the position of the saw tooth 3' as shown in Fig. Start grinding.

At this time, the second cam 35 is connected to the second grinding wheel feed lever 2.
9 is driven, and transmission is transmitted from the small lever 30 to the small lever 31 through the opening 9 door 32, thereby moving the grinding wheel holder 17 from the position shown by the solid line in Figure 2 to the position shown by the chain line. Therefore, the grinding wheel 28.degree. 28 moves upwardly along the tooth throat of the sawtooth 3' as shown in FIG. 1, and disengages above the sawtooth 3' as shown in FIG. For this reason, both sides of the sawtooth 3' are ground so that they are completely parallel when viewed from the front.
As shown in Figure 1 O of the drawing, the width of the tooth throat is constant from the tip of the tooth to the root of the tooth, and due to the included angle given to the grinding wheel 28° 28 when viewed from above, As shown in the figure, the side surface of the workpiece is ground into a drumstick shape with the desired upper tooth advance angle, so that the ground surface of the workpiece is smooth and beautiful, and it is difficult to cause bending.

At this time, the third cam 42 moves backward to feed out the feeder 37 that hooks the feed pin 38 to the next sawtooth 3', and stops when the next sawtooth 3' is sent to the polishing position. At this time, the first cam 33 returns the grinding wheel holder 17 to the rear, and the second cam 35 moves it downward, so that the grinding wheels 28, 28 return to the waiting position, and the grinding wheel holder 17 returns to the waiting position. After being fed forward by the first cam 33, when being pulled forward by the second cam 35, the side surface polishing operation is repeated to uniformly polish the side surfaces of all the saw teeth 3'. It is something that

Therefore, when sawing material using the band saw 3 whose side surface has been polished by this polishing machine, the side surface of the saw blade 3' hits the sawn surface flatly, so the sawn surface is cut smoothly and beautifully, and the sawn surface and the side surface are separated. The direction of the sawtooth 3' is regulated by the line contact of the sawtooth 3', allowing smooth sawing of material with sharp bends.

(g) Effects of the Invention The band saw side grinder according to the present invention cuts into the saw tooth with a pair of grinding wheels that match the set width and set angle of the saw tooth, and moves along the throat of the saw until it comes off the saw tooth. Because of this, the sides of the saw teeth are perfectly parallel when viewed from the front, and are polished so that they have the required chiseled angle when viewed from above, resulting in a smooth and beautiful sawn surface on the workpiece, and excellent quality that does not cause bending. You can easily get a bandsaw.

When the grinding wheel that has been cut into the saw tooth is moved along the tooth throat until it comes off the saw tooth, each part of the grind wheel hits the saw teeth evenly and wears out uniformly, so there is no need for grinding and grinding of the grind wheel, which saves time and effort. The whetstone will last longer.

It has a unique effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a main part of an embodiment of a side polisher for a band saw according to the present invention, with the frame taken longitudinally. Figure Ω is a side view of the same as above. FIG. 3 is a plan view showing the structure of the grinding wheel holder and its support and drive section. FIG. 1 is a front view showing the structure and operation of the second band saw feeding means. FIG. 9 is a rear view showing the structure and operation of the first feeding means of the same grinding wheel holder. FIG. 3 is a front view showing the structure and operation of the second feeding means of the same grinding wheel holder. FIGS. 1 to 10 are explanatory diagrams showing the polishing state of J- in an exploded manner. Fig. 1 is a rear view showing the structure and operation of the inclination adjustment means of the grinding wheel. FIGS. 1.2 and 13 are explanatory views of the state in which the inclination of the grinding wheel is matched to the cutting edge angle of the saw tooth. Figure 11 is a book,
FIG. 3 is a side view of a saw tooth whose side surface has been polished by the polishing machine of the invention. 1st S
The figure is a top view of the same as above. The first figure is the front view of the same. FIGS. 17 and 1g are plan views showing the basic configuration of a conventional band saw side grinder. 19th
The figure is a side view of a saw tooth whose side was polished by the same method as above. Figure 20 is a -L view of the same as above. Figure 2 is a front view of the same as above. 2nd Ω
The figure is an explanatory diagram of the state of sawn timber according to the same as above. FIG. 23 is an explanatory view showing the state of sawn material by saw teeth whose sides have been polished by the polishing machine according to the present invention. In the figure, 3' is a sawtooth, 28, 28 are grinding wheels, 33, 16
, 8, 10, 17 are first feeding means, 35, 29
, 30 , 32 . 31, 17 are third feeding means, 42, 40, 37
, 38 is a feeding means of the band saw 3. Figure 4 Yato voice 4th appearance Nishiki υ ℃t! −Paddy rice

Claims (1)

[Claims] a pair of grinding wheels whose spacing and included angle are set according to the setting of the sawtooth; a first feeding means for alternately positioning the grinding wheels at a standby position behind the sawtooth and a grinding position; a second feeding means for moving the grinding wheel held at the grinding position by the feeding means of the saw tooth along the tooth throat of the saw tooth until it comes off the saw tooth and then returning the grinding wheel; A band saw side polishing machine for smooth sawing, characterized in that it is equipped with a saw feeding means for converting.