For the manufacture, the author mainly used sheet steel, plates of various widths, thickness of about 10-15 mm, he also needed a metal disk (I don't know if he cut it out or picked it up ready-made). He also used a metal pipe, round timber of different diameters, he also needed bearings, one large and three small, and long bolts. Perhaps he missed something, everything will be visible on the video.
* welding machine,
* drilling machine,
* bit bit for metal,
* cutting disc machine for metal,
* magnetic square,
* compasses for marking (the author's homemade),
* drills and taps,
* vise and a device for twisting the strip (also homemade).
* grinder with stripping and cutting wheels.
We start manufacturing with the assembly of the base. For her, the author used a metal disc. A piece of metal pipe was welded to it strictly in the center perpendicularly. To keep everything smooth, he uses a magnetic corner. After the weld was descaled and brushed for metal.
Next, the author cut out a rectangular blank from sheet steel. Clamped her in a vice. I took the largest bearing, attached it to the long side of the plate and circled it. Further, according to the mark, I cut off the excess with a grinder. Flattened the cut. Attached the bearing to the groove, everything is smooth. I cut the edge of the recess at a slight angle. On the side opposite the notch I made the markings and cut off the corners.
Now this part needs to be welded to the large bearing. To do this, the author strung it on the base pipe, after placing a pair of pads of the required thickness. I put the part to the bearing, propped it up with a corner and made several tacks by welding. After making sure that everything is set as it should, I welded the part to the bearing on both sides. He worked and cleaned the seams. Then, at the same stage, I welded the inner bearing race to the pipe.
On a cutting machine, the author cut two blanks from a wide steel strip, one long and one short. First, I clamped a long part in a vice and sawed its edges at a slight angle. On one side, I made a marking and drilled a hole along it. Then, on the same side, I welded a smaller part using a square, the edge of which was also filed at a slight angle. On top of the hole, I welded a nut of the required size. All welds were cleaned as in the previous steps.
Then the author cut off a piece of pipe and welded it to a previously prepared part. Then what he got in the end, he welded to the part on the bearing. As you can see, he has got a lever, but it is not ready yet.
At this stage, the author made a support platform, since he plans to install the device on the rack. Cut out a rectangle from sheet metal to fit the platform on the rack. I made markings in the corners and drilled holes for fastening bolts with a metal crown. Then I marked out the center for details. On the marks, I drew a circle with a marker with a diameter equal to the diameter of the pipe on a prepared basis. I installed the base on the plate with the disk up, aligned the pipe with the circle, welded the parts.
At this stage, the author cut stripes two more pairs of details and processed their ends as shown in the photo.
Then I welded first the smaller parts along the plane, and the larger ones at an angle. The weld seam is also on both sides. Next, the author took the remaining three bearings and using them as a stand welded the parts as shown in the photo.
What happened in the end, the author squeezed in a vice. On one side, I placed a bearing on the parts and circled it with a marker. I drew straight lines from the circle, outlined the center inside the circle. I drilled a hole according to the mark, its diameter coincides with the diameter of the hole in the bearing.
Then the author marked and drilled holes in most of the part. I connected them with lines and cut a groove along them with a grinder.
From round metal with a diameter equal to the inner diameter of the bearings the author has cut the workpiece to a suitable length. I installed it in the hole of the previously prepared part and strung all three bearings.
I put four marks on the end, then broke them so that the bearings would not come off. On the reverse side, I welded the round timber to the plate. On the long sides of the part, the author welded two metal strips. This is the second part of the lever.
Now you need to make the most important part of the device – the snail. First, he marks the disk into four sectors and, with the help of a compass, draws spiral lines on it. Then, having installed a special device in a vice, in the photo below, he begins to make parts of the snail from steel strips of different widths. You will need two of them in total. The author takes a segment of the strip and with the help of a pipe bends it, guided by a line on the disk. Having given the workpiece the desired shape, it cuts it to size. Then the second part is made in a similar way. In this case, the inside is wider than the outside.
Next, the author makes another part of the snail – the inner core. For this he needed a piece of round timber. In it, he drilled a through hole with an offset from the center. Then he cut off all unnecessary with a grinder, thereby giving the desired shape to the delhi. Then I drilled two holes for bolts so that the part could be fixed on the disk.
< img class = "aligncenter" alt = "Cold forging device 'Snail'" src = "https://usamodelkina.ru/uploads/posts/2021-05/1621338151_100.jpg"/>
At this stage, the author has prepared a disk for attaching parts of the snail. All parts will be removable. I drilled holes at the core attachment point and cut a thread into them. Then, along the lines of the spiral, holes for the studs were also drilled. Then the core was bolted to the disk. I installed the remaining parts of the snail in the right order and welded studs to them through the holes. I cut off excess with a grinder.