Stand for grinders or pendulum saw from LBM
The trimming or electric block is often used by craftsmen to speed up the process of trimming various parts. He was chosen not only by large productions, but also by private workshops. After all, they can easily and quickly saw off almost any kind of running material - wood, plastic, metal, etc. Professional pendulum saws are a very accurate tool, because that's where it is cute. You can make a regular cut with anything, for example, a grinder, a jigsaw or a hacksaw. The trimming is sawing strictly at a given angle, which is very important in the manufacture of metal structures, furniture or plastic windows. There is such a professional tool rather expensive. We offer the option of homemade trimming on the basis of the grinder. It has enough revolutions, and the width of the disk will allow to saw not one piece, which will make this device quite in demand for any workshop.
We manufacture the trimming lever We produce the lever mechanism from the profile tube. This pogonazh is convenient because it has strict edges and regular form in the section, which means it will be easy to maintain the smooth tilt trajectory of the grinder.The curved part is equal to the size of the reducer head of the grinder. We cut it with a Bulgarian and boil the corner joints. It is also necessary to make holes for fastening the tool. Since it weighs a lot, the holes for the mounting bolts must be from all three planes with which the grinder adjoins the lever.The final element is a plate placed at right angles to the axis of the tilt of the lever.The handle of our trimming will be fixed in it.Weld the adapter plate on the end of the lever, and also fasten it to the shaft. At the opposite end of the lever, mount the handle.In order to more reliably place the workpiece on the frame, you must make a stubborn bar.We manufacture it from a small metal corner of 30x30 mm. We fix it on one bolt at the very edge of the cut, left by the Bulgarian to mark the boundary of her work on the frame. Such fastening will allow to change the angle of facing relative to the blank stop in this bar.To fix the second edge of the stop, you also need to make a hole for the bolted connection. Along the hole we mark the trajectory of the plank movement along the arc. Drill a hole for the jigsaw file and make a groove with a jigsaw in the width of the free stroke of the clamping bolt.Pressing the stop will be more convenient if you weld in place of the hole a small piece of 15x15 square pipe with an arbitrary washer at the top. The bolt can be taken longer, so that the wing nut can be twisted easily and quickly by hand.The metal elements of the machine must be cleaned with a grinder or sandpaper, primed and then painted. So the metal is better and longer to survive, and will be reliably protected from corrosion.That's it,With the help of scrap materials you can make a simple and practical tool that is convenient to use, for example, when working on objects.
Benefits of the pendulum saw
- Cut accuracy;
- Ability to cut the workpiece at any angle;
- Safety of work;
- Versatility - you can cut wood, plastic, metal;
- Practicality (convenience) of work.
Resources needed to make home-made trimmingMaterials:
- Textolite, 1 cm thick;
- Axis from the bicycle carriage;
- Bulgarian with disc 230 mm;
- Section pipe section 40x25;
- Metal plates 30-40 mm wide, 3-4 mm thickness;
- A pair of ball bearings with clamps;
- Metal bar with a diameter of 10-12 mm;
- Elastic spring;
- Metal corner 30x30 mm;
- Paint on metal;
- Bolts, nuts, washers.
- Drill or bench drill;
- Epoxy glue;
- Welding machine;
- Spanners, pliers;
- Measuring tape, pencil.
Stand and movable shafth3> As a bed the author chose an excellent material - textolite.It does not burn, does not deform under the influence of temperature and is absolutely moisture resistant. Two sheets of PCB spliced together on epoxy, and tightened the bolts at the corners, which in addition also serve as the legs for the machine.
For the movable shaft of the lever the axle from the bicycle carriage will fit. This part has lugs that are used to mount bearings. To fix the bearings on the frame will need two clamps. They can be made from any metal strip of suitable width.
Fix the moving shaft with bearings to the frame to the frame with clamps. The center of the shaft axis must be prepared (cleaned) for the welded joint with the adapter plate on the lever.Subsequently, it will be reinforced with a stiffener made of a small piece of metal.
The return pillar, the stop barThe back mechanism of the lever on the pendulum saw performs various spring mechanisms. In our case, it will be a very simple option, consisting of a rod and a spring tensioned on the lever. We cut a thread with a depth of about 5-6 cm onto the end of the metal bar. Screw the nut all the way down, put a washer and pull the stand on the frame almost close to the bearings so as not to weaken the spring. We clamp one end of the spring with two nuts on the stem, and the second we catch onto the welded nut on the lever.
ElectricianAccording to the scheme proposed by the author, we mount the button for turning on the grinder in the lever handle. On these angle grinders, the standard power button goes without fixing. Here we can put it at will. The cable to connect the tool can be left regular. We will bring it to the socket, which is fixed in the end part of the bed. It is advisable to choose waterproof for outdoor work, which will save the connection and make it more durable and reliable. Our homemade pendulum saw is ready. Now it is possible to clamp a Bulgarian (LBM) in it, and try it out through an extension cord in action.
Safety when working on a homemade pendulum saw
- Do not forget about safety work on such a tool. Protective gloves and goggles must be worn;
- The grinder must be positioned so that the burning abrasive from the discs flies from the machine, not the operator;
- Casing grinders must be securely fastened and turned towards the operator to protect him;
- Do not over-press on the disc when sawing. Backlash in such a self-made device is inevitable, and therefore the disk may jam or even break during operation.
Date: 09.10.2018, 12:41 / Views: 33464
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