The act of cutting threads on parts is nothing new. In fact, the thread cutting process has been around for many years and thread grinding is not new. However, it is still one of the most accurate methods for creating threads with a tight tolerance. Here is a look at various processes for creating threads and why thread grinding may be your best option.
Simple Thread Cutting
This is a very quick and simple operation. It is often used to thread an entire part all the way up to its shoulder (like a bolt). However, it is not an accurate process, but can be used for inexpensive threaded items.
Tap and Die
This process can be manual or machine driven. However, only so much of the part can be threaded without waste material getting in the way. Manual tapping is very time consuming and machine methods are quicker, but accuracy is not great. However, this method works well for repairing damaged threaded holes in parts.
Single Point Thread Method
In this procedure, a round part is held in place while a single cutting tool passes over it to create threads. The threading is determined by the rotation of the work piece. This method can be used to produce internal or external threads.
Single point threading is not a fast operation. However, it is often used with CNC machines. This process is sometimes utilized when unique threading is required and speed is not a consideration.
Milling
This threading process is created with a milling machine and it has several benefits over thread cutting and single point methods. Milling is much quicker and there is less chance for breakage. In addition, both right handed and left handed threads can be created.
Thrilling
Thrilling is a process in which holes are drilled and threaded. This is an excellent way to drill holes and thread them in the same process. Thrilling requires fewer moving parts than other methods but is limited on drilling depth.
Thread Grinding
The grinding method uses special wheels which match the threads to be created. It is commonly used when great accuracy is required and works well for very hard metals. This method is similar to lathe cutting, except a thread grinding wheel is utilized. Grinding can centerless or centered and is commonly used in these industries:
- Medical devices
- Aerospace
- Tooling
- Motion Control
- EDM
- Plastics
When you choose the right thread grinding service, you can receive any thread form you want, in a number of styles, including variable pitch, multiple start, and taper threads. In fact, your machining professionals can create custom threading when needed.
Minnesota Grinding can do your thread grinding from autocad format, and calculate your overburn and shrinkage. To see all we can do for you, visit us on the Web today at Minnesotagrinding.com.
