0398 Sawing

It was very easy to determine the distance between the saw blade and the previous auxiliary line, and the diameter of the upper and lower flywheels of this band saw machine was 30 centimeters.

If the auxiliary line is in the right position, ignoring the effect of the band saw blade, which is only a little more than a millimeter thick, then the distance from the saw edge to the center line should be exactly 30 centimeters.

To be on the safe side, Xu Yi opened the casing of the flywheel under the bandsaw machine and directly used a plumb weight to hang the line downward at the center point of the lower flywheel spindle.

Seeing that the landing point in the middle of the plumb weight was just on the extension line of the auxiliary line on the ground, Xu Yi nodded and closed the chassis, and officially began to determine the track installation location.

Xu Yi added 30 centimeters to the distance between the longest ram and the midpoint of the adjacent rail, plus a distance of about half a centimeter, which was enough to ensure that the sports car would not be safely left when moving back and forth, and also obtained the distance between the rail close to the bandsaw machine and the auxiliary line drawn before.

As long as the rail is installed straight, and the distance between the two ends is equal to the distance from the auxiliary line, then the sports car is basically no problem in terms of leveling, and this distance will also be the reference standard for the official installation of the band saw.

Xu Yi figured out the position relationship between the orbit and the auxiliary line, and was ready to start adjusting the orbit.

However, before the adjustment, Xu Yi still has a problem to solve. Both tracks have steel beam-like plugs at the ends, and the cross-section of the rails cannot be directly observed

Xu Yi first removed the sports car from the track, used a caliper to use a caliper on the track near the side of the band saw machine to directly select two places, and used a caliper and a pencil to accurately mark the midpoint of the track on it. Then he took the ruler and drew the center line on the track and extended it to the steel member at the head. Then use the ruler to draw a straight line vertically on the outside of the plug based on this first. This determines the centerline of the track.

Now you can finally determine the installation location.

Xu Yi brought over the electric drill. A round hole with the thickness of a little finger was drilled at each of the four corners of the plank near the head, and a bamboo skewer of about the same thickness was cut into a bamboo skewer about half a foot long and nailed vertically through the hole to the ground, so as to prevent them from moving in the next operation and causing problems with the installation accuracy of the guide track.

After processing the plank, Xu Yi took the ruler and directly drew the perpendicular line of the previous auxiliary line at the position of the board, and then measured the installation scale on this perpendicular line, and then drew a straight line vertically on the wooden board - this straight line is equivalent to the extension line of the center line of the track.

After the other end of the track was also treated, Xu Yi carefully moved the track so that the perpendicular line on the top of the track plug was just on the same plane as the straight line on the wooden board below. Then go to the other end of the track and adjust the position of the track as well.

However, under this move, it is difficult to ensure that the opposite end that is not fixed will not be misaligned, so Xu Yi walked back and moved the position of the track again, and then walked towards the tail of the track.

After repeated adjustments, and finally there was no error in the positions at both ends of the track, Xu Yi moved the sports car back to the track.

After rechecking the position of the lower track and confirming that there was no displacement of the track, Xu Yi pushed the sports car to slide along the track in the direction of the band saw. When the sports car was about to approach the band saw, Xu Yi bowed down and pushed the sports car forward. While looking at the distance between the leading edge of the ram and the saw blade, and the relationship between the lower edge of the ram and the operating table.

Until the entire sports car was completely connected to the band saw, Xu Yi stood up and let out a sigh of relief.

The machining accuracy of the lower edge of several rams is not high. Therefore, there was a certain height error, but there was no collision along the way. Xu Yi walked to the side of the band saw machine again, repeatedly pushed the sports car to stop a few rams on the saw table, and measured the distance between the operating table and the ram with a ruler.

In the end, Xu Yi found that there was still a gap of about half a centimeter between the workbench and the lower edge of the lowest ram, and there would be no collision at all. Such a height difference should be said to be completely suitable, basically will not waste the processing space of the saw band saw, and when working, it will not hit the saw table due to the vibration of the sports car.

Xu Yi parked the sports car next to the bandsaw, ready for the final inspection, he shook the handle to control a few stuck wooden stakes to move in the direction of the bandsaw machine, and observed the situation of the stuck hook on it.

Sure enough, if it is installed according to the current standard, if the stake process reaches its maximum, the front end of several hooks will almost exceed the plane of the band saw blade by more than an inch. If there is such a situation, if the length of the hook is not adjusted during operation, it is really possible to cut the band saw blade on the hook.

Looking back, Xu Yi shook his head, as if it was impossible for him to make the wooden stake enter this journey.

As long as the band saw is installed accurately, in order to improve the utilization rate of wood, it is necessary to reduce the amount of board skin, and a few saws on one side will turn over the wood on the sports car, and then saw the other side.

In order to save time, you can process all four sides of the wood according to the corresponding correspondingly, wait until all the wood is processed, leave the middle piece of heartwood, wait until all are processed, and then readjust the length of the hook, and then process these heartwoods in a unified manner. In this way, you can completely readjust the length of the hook to avoid such accidents.

Not only does this reduce the number of skins, but it also makes as much use of the material as possible, and it is definitely easier to turn the wood in the direction each time than to adjust the hook length every time.

After checking again and without any problems, Xu Yi began to fix the track. Now it's just a temporary installation, as long as you can ensure that you won't be affected when you use this band saw in the short term, so Xu Yi doesn't plan to put too much thought into it.

He took the drill and replaced it with a drill bit that was the same thickness as the anchor bolts, and then he stretched the drill bit directly into the holes along the track and the steel beams, carefully drilling the planks underneath the holes. As usual, he went to find bamboo poles of similar thickness, Xu Yi cut them into sections of bamboo pipes almost half a foot long, pierced them into the holes, and nailed the remaining parts of the outside into the soil, fixing the boards and tracks.

The hooks that held the wood in place had not been used for too long, had become less sharp, and had been covered in rust. Xu Yi simply dismantled them all, took the grinding wheel and sharpened them before putting them back on. Then fill the various parts of the sports car with lubricating oil.

After confirming that the activities of each component were normal and there were no obvious errors, Xu Yi was ready to officially start sawing wood.

Xu Yi took a steel ruler and directly measured the diameter of each log, confirmed that the diameter of the wood in the thinnest log was 35 centimeters, and then took a pen and paper to calculate it.

Thirty-five centimeters of roundness, ideally, after removing the processing saw road, you can almost get an inscribed square of wood with a side length of almost 25 centimeters, but considering the problem of the wood storage zài size head, this will inevitably lead to the error of zhì after removal, you can also get a square with a side length of almost 24 centimeters.

Of course, this operation is simple, but it will inevitably cause some waste in the process. Xu Yi drew and calculated again, and finally determined that after removing the useless board skin from the outside, he could process four more wooden boards with a side length of almost nine centimeters and a thickness of more than three centimeters, and the remaining side skin could be completely discarded.

After the calculation was completed, Xu Yi finalized the processing sequence, then loaded a log onto the sports car, and pushed the wood hard against the stuck stake. Then remove all the hooks on the stuck wooden stake and put them on the log, and hit the log with a hammer, Xu Yi turned on the chainsaw switch and officially began sawing wood!

Xu Yi turned the handle on the back of the sports car according to the calculated processing amount, and watched the wooden stake drive the wood to slowly slide towards the outside. Xu Yi turned the handle while looking at the degree on the ruler on the side of the handle, until he reached the number he expected, he stopped, and directly pushed the sports car towards the band saw.

A few moments later, a log was sawn to the head. Xu Yi retreated, turned off the machine and checked, the saw was completely straight.

Now I want to return the running test, but the human-powered sports car does not have a pendulum system, and it has to be rotated back by hand, Xu Yi wrote down the reading of the ruler on the runner, and turned the handwheel in reverse to push the wooden stake to drive the log to move more than a centimeter away from the saw blade, and then dragged the sports car back.

Then Xu Yi rotated the runner forward, and after returning to the original position, Xu Yi set aside a little machining allowance, and then officially opened the board according to the thickness of three centimeters.

After the piece of wood was sawed down, Xu Yi went around to the back of the band saw and carried the freshly baked plank to check it again.

Measuring all parts of the board with calipers, Xu Yi nodded with satisfaction, the difference in thickness is not even half a millimeter, this band saw assembly is absolutely perfect!

Putting the wooden board aside, and then putting the same piece of leather aside, Xu Yi dragged the sports car back to its original position again, took a hammer to remove the hook, and directly flipped the log 180 degrees, so that the plane that had just been processed was close to the stuck wooden stake, and then the hook was stuck on the wood again.

After the same processing, there is now only a wooden board about 25 centimeters thick on the lathe, which is wrapped in bark on both sides.

Xu Yi rotated it 90 degrees again, let one of its planes stick to the sports car, and after fixing it, he repeated the previous operation.

After the processing was completed, Xu Yi took the angle ruler card and stuck it on the adjacent side, and saw that the adjacent two sides were completely at right angles, so he nodded with satisfaction and continued to be busy.

In the end, all that remained of the sports car was a boxy square block of wood with a side length of nearly 25 centimeters. (To be continued......)