The main methods for accurately aligning keyway tools without using any tools are the following:
(l) When milling the keyway with a keyway cutter or an end mill on a vertical milling machine, correct the workpiece axis by means of a dial gauge, and after clamping it securely, place the tool approximately near the axis of the workpiece to start Cut in the middle. When the rotating tool slowly approaches the workpiece, when the tool comes into contact with the workpiece, two arc-shaped tool marks are drawn on the workpiece. According to the position of the tool mark, the direction of the tool to the axis of the workpiece can be judged. When the test cutter marks are symmetrically distributed in the center of the workpiece, it can be concluded that the tool has been accurately positioned on the axis of the workpiece. If the keyway milling cutter is not used and the keyway is milled with a cylindrical milling cutter, the alignment method is the same as above. The only difference is that the cylindrical cutter has a test cutter mark formed on the workpiece, which is slightly wider than the keyway cutter.
(2) The keyway is machined by a horizontal milling machine. The tools used are generally disc-shaped three-sided blades or saw blade milling cutters. When these disc-shaped cutters are offset from the workpiece axis, the trial-cutting tool marks are asymmetrical and non-closed. Round curve. When the tool is centered, the test blade marks become a symmetrical oval.
(3) As for the keyway in the hole of the disc-shaped part, if it is processed by the inserting machine, the slot cutter must first be installed correctly and cannot be skewed.
For the middle test, if the slot cutter is to the right, the tool draws two straight knife marks on the wall of the hole from top to bottom. When the tool is to the left, the knife mark is thicker and thinner. If the two trial cuts are equally thick, the tool is just in the center of the hole. The alignment method of the keyway cutter described above is simple and easy to master, and does not require any special tools. Its greatest feature lies in its accuracy.
Extrusion aluminium, also known as aluminum extrusion, is a manufacturing process used to create durable and versatile aluminum-based products. The process involves pushing molten aluminum through a die under high pressure or pulling it through the die using a ram. The resulting product is a smooth surface, uniform cross-section, and precise dimensions.
The extrusion process can create complex shapes and intricate designs, making it popular in various industries such as architecture, automotive, and aerospace. Common extruded aluminum products include window frames, door frames, curtain walls, and structural components.
One advantage of extrusion aluminum is its versatility. It can be modified and finished to suit different requirements, such as anodizing to provide extra corrosion resistance or powder coating to add a decorative finish. Additionally, extrusion aluminium offers excellent strength-to-weight ratios and is highly durable, making it an ideal material for products that require high strength and durability.
Another advantage of extrusion aluminium is its cost-effectiveness. The manufacturing process is highly efficient, allowing for the creation of large quantities of products at a reduced cost compared to other materials such as steel or copper.
Although extrusion aluminium has many benefits, it also has some limitations. The material is highly conductive and may require insulation in certain applications. Additionally, extruded aluminum products may have difficulty achieving tight tolerances and precision, making it unsuitable for some specialized applications.
Overall, extrusion aluminium has become an essential material in various industries, providing both strength and versatility at a reasonable cost. As technology continues to advance, even more advanced and innovative applications of extruded aluminum are expected to emerge.
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