Self-made traditional manual saw blade

The installation mode is serrated forward and the hand-held part is backward. There is no difference between up and down, because you are not sure whether to lean over or lie on your back at work.

1. Install hacksaw bars according to different shapes and materials of hacksaws. Usually, the serrations of the hacksaw bar face the front end of the hacksaw. The installation direction of the saw blade is the front where the tooth tip is pushed out of the saw.

2. When the saw is pushed forward forcefully, the sawtooth can cut into the curved edge of the workpiece. Because it is necessary to cut forward, it is difficult to cut if the angle between the hypotenuse and the front cutting edge becomes a large negative angle.

3. When sawing a thin workpiece, if there is no saw blade with fine teeth, especially when the thickness of the sawed workpiece is close to or less than the distance between two serrations, the saw blade is installed backwards, that is, the serrations are backward, so that the plate can be sawed smoothly.

4. When installing the saw blade, now insert the two holes of the saw blade into the fixing post, and then tighten the adjusting knob. The correct way to use it is to push the saw bow hard forward and pull it gently when pulling it up and back.

Extended data

Saw blade installation and maintenance:

1. The equipment is in good condition, the spindle has no deformation, radial runout, firm installation and fixation, no vibration, etc.

4. Check whether the saw blade is damaged, whether the tooth profile is complete, whether the saw plate is smooth and smooth, and whether there are other abnormal phenomena to ensure the safety of use. 3. When assembling, ensure that the arrow direction of the saw blade is consistent with the rotating direction of the main shaft of the equipment.

4. When installing the saw blade, keep the shaft, chuck and flange clean, and the inner diameter of the flange is consistent with the inner diameter of the saw blade, so as to ensure that the flange is closely combined with the saw blade, install the locating pin and tighten the nut. The size of the flange should be appropriate, and the outer diameter should not be less than 1/3 of the saw blade diameter.

5. Before the equipment is started, under the condition of ensuring safety, a single person operates the equipment, inching and idling, and check whether the equipment turns correctly and whether there is vibration. After the saw blade is installed, it idles for a few minutes, and it works normally without slipping, swinging and jumping.

6. If the saw blade is not used immediately, it should be laid flat or hung by the inner hole. Other articles or feet shall not be stacked on the flat saw blade, and pay attention to moisture and rust prevention; When the saw blade is no longer sharp and the cutting surface is rough, it must be reground in time. Polishing can't change the original angle and destroy the dynamic balance.

7. The internal diameter correction and positioning hole processing of the saw blade must be carried out by the manufacturer. If it is not handled properly, it will affect the use effect of the product and may be dangerous. In principle, reaming should not exceed the original aperture by 20mm, so as not to affect the stress balance.

References:

Baidu encyclopedia-saw blade