Nine major methods of acrylic processing include:
1, crossed, 2. Saw, 3, file, 4, hot cutting, 5. Rewan, 6, cutting, 7, drilling, 8, tapping, 9, bonding.
1, discount: This is a kind of acrylic cuttings method, the practice is: the ruler on the plate to be cut, the edge of the ruler coincides with the cutting line, fixed ruler. Using a hook knife to drag along the edge of the ruler, a thin groove will be drawn on the plate to be cut, and when the depth of the groove is about half the depth, it will be folded. Fold the time to move the plate so that the narrow hook slot coincides with the edge of the table, one hand pressing the plate in the table, the other hand holding the plate outside the table, the hand pressed hard under rapid pressure. Acrylics will be snapped off from the location of neatly broken.
2. Saw: Saw with the sawing material or molding, cutting the line can be straight song. A dedicated vibration saw, micro-saw, you can also use the hacksaw, wire saw. The use of sawing acrylic, should make the sawdust fall, because the sawdust in the friction heat of the saw blade on the sawy teeth melt, the sawtooth loss of effect, can be slowed down to avoid overheating the saw blade saw blade or brush To saw the end. As sawing the edge of the material is rough, you must also use the file, sandpaper polished smooth. Truncated pipe and bar commonly used data.
3, file: file is file rasp. There are three conditions for the file: (1) the edge of the sawed material, (2) the resulting roughing is slightly oversized but not easily sawn, and the file is filed to the desired size. (3) Remove the sharp edges and corners to make it sleek, feel good.
4, hot cutting: If the cutting line bending complex, there is no dedicated vibration saw, hot cutting can be used to cut, but pay attention to using hot cut sawed acrylic edge thickening and uneven, so hot cutting can only be rough Embryo, should be in the finished product outside the standard hot cut, to leave fine workmanship, or after processing out smaller than the required size.
5. Rebar: If you want to bend the plate into a certain angle. For example, to be bent at right angles. Must use the hot bender, the material to be folded on the bended parts on the roast soft, and then bent on the edge of the table to be cooled after the angle fixed.
6, cutting: Acrylic can also be like copper, aluminum and other metal cutting machine with a lathe. For example, require a more accurate interception of a plexiglass or plexiglass tube, turning lathe can ensure cross-section perpendicular to the axis, and the size is more accurate. Another example is the use of bar processing into small pulleys, conical, truncated cone and other parts are lathe. It must be noted that: the process of cutting out the debris at any time with a brush to go, so as to prevent them in the friction between the tool and the material stick to the tool, affecting the processing speed and quality.
7. Drilling: drilling holes in acrylic is more troublesome than drilling holes in metal and wood. Mainly lies in the following two aspects:
(1) The heat generated by the friction between the drill bit and the acrylic makes the drill bit melt and stick to the drill bit, which wraps the drill bit and can not drill a good hole.
(2) When the hole is going to be drilled, the drill bit will rotate the material together, especially if it drills a hole in the plate with a drill with a diameter of 4 mm or more. Careless accidentally touched the hand, the operation should pay attention to the following points:
① best to wear gloves on the left hand, to prevent the rotation of the injured hand.
② first with a small drill such as a diameter of 2 ─ 3 mm drilled holes to ensure accurate hole location.
③ Intermittent into the drill that is operating into the drill rod to drill a bit and immediately let the drill lifted cooling, so you can avoid overheating the drill bit to melt cuttings.
④ drill cuttings with a brush to remove.
⑤ hole to be drilled, each drill into the depth to be small, to prevent the drill bit to rotate together with the material.
⑥ choose the right size drill. Sometimes the metal rod into the acrylic hole, and requires stability, the diameter of the hole should be 0.1 ~ 0.2 mm smaller than the diameter of the metal rod. If you want to make the metal rod flexibly rotate in the hole, the diameter of the hole should be 0.1 ~ 0.2mm larger than the diameter of the metal rod.
8, tapping: Tapping is in the material on the thread. Sometimes we want to screw into the plexiglass, you must first drill a slightly smaller than the screw on the screw (small 1/10 to 2/10, the greater the bar, the less the more) of the hole, and then the corresponding Tap (open fangs tools, tools, shopping malls in stock) into the hole, the hole has a thread. For example, to make a hole with a diameter of 5 cm screwed into the hole, first with a diameter of 4 cm drill hole, the tap M5 fixed in the tap holder, the tap into the hole, the thread attack out It's
9, bonding: As the acrylic dissolved in chloroform, so plexiglass bonding between each other does not require other adhesives, as long as a small syringe (usually with 5ml) to take a small amount of trichloromethane liquid, gently and evenly The chloroform will be squeezed to the surface to be bonded plexiglass, immediately pressed the adhesive, until the liquid volatilized, plexiglass sticky and good. Here to pay attention to the amount of trichloromethane, if too little, the bonding area is too small, not solid; if too much, flow to other surfaces, will leave a stain, affect the appearance, but also deformation of the material bubble will also affect Quality, as well as to increase the area of the junction, you can sprinkle some plexiglass powder around it (the powder collected in the file plexiglass), and then dropped into the chloroform. In addition, chloroform is a toxic chemical, the hands of the wound can not operate, so as not to invade the body from the wound.
