After you have uploaded the CAD model to our automated quoting and design analysis engine, the CNC machines at our company will mill or machine your part to your specifications. However, despite all of the technological advancements that make it possible, the human component is still very important, and it is frequently to blame for the recurring problems that we find in CNC machined parts. Despite all of the technological advancements that make it possible, however, the human component is still very important. If you are able to steer clear of these five common blunders, the quality of your designs will almost certainly improve, your production times will be reduced, and your overall manufacturing expenses might go down.

1. Steer clear of functions that call for additional processing that isn't fundamentally required.
It is a common oversight to design a part that does not require machine cutting; the increase in part run time caused by this unnecessary machining is one of the primary factors that contributes to the total cost of production. Moreover, it is a common oversight to design a part that does not require machine drilling.Consider the following example as a point of reference:The design stipulates that the part application must have a critical circular geometry, it calls for a square hole or feature to be machined in the middle of the part, and then the material that is surrounding the part is cut away to reveal the finished product.Nevertheless, a sizeable amount of additional run time is required in order to process the remaining material using this method.In a construction that is less complicated, the machine simply cuts the component out of the block. This eliminates the need for additional machining that is inefficient and involves working with the surplus of material.Because of the change that was made to the design in this specific example, the machine time was reduced by almost half. This enabled the designers to keep the design as simple as possible in order to avoid additional run time, unnecessary tooling, and additional costs..

2. Steer clear of text that is bolded or extremely minuscule.
Your component may require a machined part number, a machined description, or a machined company logo.Alternately, you may feel that a certain section of the document would benefit from the addition of some text that would look really neat there.Adding text will, however, result in additional costs, and the smaller the text, the higher those costs will be. Adding text will not be free.This is because the very small end mills that are required to cut the text run at relatively slow speeds. This, in turn, increases the amount of time that is required to finish the run, which in turn raises the overall cost.If, on the other hand, your part can accommodate larger text, then it will cut the larger text significantly faster, which will result in cost savings due to the decreased amount of time spent cutting the larger text.If you can choose between the two, recessed lettering is preferable to raised lettering whenever possible.In order to create the letters or numbers on the part with raised lettering, the material on the part must first be ground away.

3. Keep a safe distance from tall, narrow walls.
Wall features on part design are frequently difficult to work with, and the cutters that are used in CNC machines are made of difficult and rigid materials such as tungsten carbide and high-speed steel.In spite of this, the forces exerted during the machining process cause the tool, as well as the material that is being cut, to bend or deflect to some degree.This can lead to problems such as unwelcome corrugated surfaces and difficulty meeting part tolerances, both of which are undesirable. The result of these problems can be problematic.Walls can be chipped, bent, and broken in addition to being susceptible to breaking.

Walls with a thickness of 0. 508 millimeters or less are more likely to fracture during processing, and as a result, they are more likely to bend or warp as a result of these fractures. Because the required thickness to increase the stiffness of the material is directly proportional to the height of the wall, this is the result. Because knives typically spin at 10,000 to 15,000 rpm and the general rule of thumb for wall aspect ratio is 3:1, it is important to remember that when designing walls, it is important to avoid making them too thick. By giving the walls a draft of one, two, or three degrees so that they taper rather than standing vertically, it is possible to make machining easier and reduce the amount of material that is left over. This is possible because the cnc machining parts walls will not be standing vertically.

4. Avoid Small FeaturesCertain parts have been designed with square corners or small recesses on the inside corners in order to lessen the component's overall weight or make room for additional components. It is possible That You Won't Certain parts have been designed with square corners in order to accommodate additional components.
But the internal 90-degree corners and the small grooves were too small for our large cutters, so in order to create them, we had to use ever-smaller tools to pick up the corner material. This was a challenge because the internal 90-degree corners and the small grooves were very precise.As a result of this, it is possible that anywhere from six to eight different tools will need to be utilized, and the utilization of each of these tools will add additional time to the total amount of time required for the run.To avoid this, first ascertain the significance of the grooves; if they are included solely to reduce the overall weight of the machine, you should reconsider your design so that you do not waste money on machine material that does not require cutting. To avoid this, first ascertain the significance of the grooves.

5. Remember to take into account the finished shape of the machined parts.
It is standard procedure for the design of an injection-molded component to be uploaded to the prototyping section of our tooling service prior to the purchase of the mold that will be used to make the component.On the other hand, the requirements for the design of each process are one of a kind, and the results can be quite variable.When molded, thick machined features can occasionally display issues such as sinking, warping, porosity, or other defects. Other times, these issues may not manifest themselves.It takes a significant amount of time to complete the machining process for a well-designed molded part that features ribs, grooves, and any number of other design elements.

The takeaway message here is that the design of a component is typically optimized for the manufacturing process that it will go through. This is the point that needs to be taken away from this. You can begin by consulting with our team about how to modify the design of molded parts for machining, or you can simply prototype injection mold the part while it is being produced in final quantity. Both options are custom cnc milling available to you. You have the ability to choose either of these two paths.