In the past, Dongguan CNC machining plant needed an additional operation on a milling machine or broaching machine to process serrations on parts. In this way, it needs to be set separately on additional machine tools, resulting in additional labor costs (for milling machine or broaching machine operators), of course, additional handling, movement and possible temporary parts storage between processes. In addition, parts may require intermediate cleaning operations before serration.
If Dongguan CNC machining plant regards sawtooth machining as one of the companies operating alone, you will be glad to learn that there is a sawtooth machining razor, which can be used to carry out sawtooth machining on CNC lathe, just like another process. Sawtooth razors are manufactured by schwanog and sold in the United States by GST Tools Co., Ltd. (Roselle, Illinois). The tool is composed of replaceable blade and supporting tool holder. The high-speed steel blade with tin coating consists of a 1 / 4 circle with six teeth. Only the first or guide teeth have a complete (finished) tooth profile. On the other five teeth, the tooth profile is a decreasing profile.
If you take the sawtooth machining of parts as a secondary operation, you can simply use this sawtooth razor as another process on the CNC lathe.
At the beginning of sawtooth machining in Dongguan NC machining plant, the main shaft remains stationary, while the turret goes three times on the Z axis to form the first five teeth and the fully formed sixth teeth in the form of progressive stage.
The tool is mounted on the turret of the lathe and forms sawtooth along the part through continuous z-axis stroke. At the beginning of the process, the spindle remains stationary and the tool runs three times to form the first five teeth and the full shape sixth teeth in a progressive stage. Then the spindle is indexed to the next tooth position (a c-axis is required), in which the first five teeth are formed incrementally and the last tooth is completed. Each time when the spindle is indexed to the next tooth position and the turret completes the part stroke, the machining of one tooth is completed. The process continues until the whole circle is indexed and the sawtooth is completely formed.
Once the first tooth of Dongguan NC machining plant is fully formed, the spindle divides the part to the next tooth position, and the turret goes another way to complete the tooth processing. Every time the spindle is indexed, a complete tooth is formed. The indexing cycle continues until the part is completely machined to the required sawtooth shape.
Dongguan CNC processing factory thinks the process is simple and fast. For example, the sawtooth machining of 1045 steel parts can be completed in less than 7 seconds on an ordinary CNC lathe with c-axis function. Combining the sawtooth machining operation into one lathe process can simplify the processing of parts: the operation does not have to be carried out on additional machine tools, avoiding the cleaning of parts between different processes, the setting and operation cost of additional machine tools, and the additional part handling process. The most important point is that the part is fully machined when leaving the lathe and ready for cleaning and sending to the customer. GST reported that the blade for sawtooth machining can be sharpened by the end user, but facilities for tool re centering must be provided. The removal of the blade is fast and simple because it is fixed with a single screw. Since the tool holder is only an adhesive tool, the tool for sawtooth machining can be used on both multi spindle machine tools with c-axis function and single spindle machine tools.