What CNC Modular Fixtures Do And Why You Need Them – CNC Workholding


Computer numerical Control (CNC) is a machining process that uses computerized controls and is an agent of stability and positioning It has lots of tools with various usages. Therefore, before usage, it requires proper training to avoid damage. 

A CNC fixture uses central securing, supporting or mounting a workpiece on the machine. These fixtures reduce the effort a human needs to use during a manufacturing process. And because of this, many people usually compare them to jigs. However, jigs and CNC fixtures are quite different as the latter doesn’t use guide cutters. Instead, fixtures only support, stabilize and secure the workpiece during manufacturing. 

Application of CNC fixture

Due to its many usages, CNC fixtures have wide applications in manufacturing. Here are some of its applications;

  • Positioning – CNC Workholding fixture ensure the workpiece is done well on the machine relative to the machine tools. This makes it possible that the machine surfaces meet the needs required.
  •  Clamping – when positioning is done, CNC fixtures apply a force on the workpiece to make it firm during the process. 

Types of fixturing

  1. Modular fixture

Machine fixtures has several tools and fixture elements with standard designs but different functions and sizes. With this, you have a chance to assemble different types of new fixtures according to the needs of the processing. This saves time for manufacturing and designing. Modular fixtures shorten the production period cycle and improve manufacturing efficiency. 

2. Soft Jaws

Soft jaws have parts that are hard to fixture with standard level tight clamp jaws during machining. With this fixture, you can 3D print or plant them to the specific particulars required for different CNC tasks. But one disadvantage of a soft jaw is accommodating the two screws that hold them tight. Mechanical engineers should therefore be mindful to avoid any variety in breadth or size of the material being held by the soft jaws. 

3. Large parts

Large parts are normally things that won’t fit in a conventional six-inch tight clamp. Therefore, they are put on the CNC workholding machine and processed effectively utilizing an installation plate, mod tight clamps, and other clamps. 

Benefits of using CNC fixtures

The benefits include;

  • Accuracy
  • Faster production and efficiency
  • Improved safety
  • Cost-effectiveness

Why choose a CNC fixture such as the Workholding fixture?

CNC machine operators usually appreciate the perfect tool for the right job. But for this to happen, the right CNC fixture must be selected. And although fixturing is quite challenging, engineers who love to take on challenges know the importance of fixturing in CNC machining. 

What to know before designing or using a CNC fixture

As mentioned, using the CNC fixture involves knowing and understanding many things. Here are some of them;

  • Know when you should clamp as it greatly affects the quality of your products.
  • Be economical by knowing the number of parts you are making and the number of fixtures you require.
  • Reference important surfaces.
  • CNC fixtures improve the tolerance level by contributing to your manufacturing operations. Hence you must ensure its setting improves accuracy. 

Since how the CNC Workholding fixture works is complex, it requires studying. You must understand the process to have a smoother operation


Please enter your comment!
Please enter your name here