Keep Your Press Brake And Bending Tools Clean

Keep Your Press brake and Bending Tools Clean


One of the most important factors to focus on in metal bending press brake maintenance is cleanliness. Dust and dirt are the enemies of your whole sheet bending machine , especially your press brake tooling. It is essential to keep your press brake wiped down and clean. Your machine should also have rust protectant applied to possible rusting surfaces.

Your cnc controlled press brake bending back gauge needs to be kept clean to work accurately. Lubricate your rails and ball screws according to your operation schedule, but be sure to wipe off all excess lubrication so it isn’t collecting debris and other contaminants.

The pressing bending machine's cabinet will usually have cooling fans or vent filters which can become blocked by dust, so they should be removed and cleaned or blown out at least monthly and as needed. Always keep the door to the electrical cabinet closed except when you are accessing it, both for safety and for cleanliness. The hydraulic pump motor should also be kept clean of dust and dirt.

The press brake’s bending safety lasers must be kept clean in order to operate correctly. Any dirt on the lens can diffuse the laser, causing the light beam to spread out instead of being focused straight across. Scratches on the lens can also diffuse the laser, so be sure to use a clean, non-abrasive cloth to wipe off the dirt. It wouldn’t be a bad idea to have a specific cloth set aside that you clean the laser with every morning at start up to prevent any build-up on the lenses.

Another practice of good press brake bending maintenance is to keep the area around your press brake clean as well. Keeping your work area clean can help prevent issues with safety and productivity, along with keeping dirt and dust away from your press brake.

Clean Your Press Brake Bending Tooling

When you bending sheet metal on a press brake, mild steel, stainless steel or Aluminium, you cause mill scale to flake off of your material, particularly when you are working with black iron. Regardless of what material you are bending, dust and debris will come off of the metal and will work its way down under your dies. Even if you are bending aluminum, there are fine particles along the cut edge that will break off. Any material coatings, rust-proofing chemicals, and built-up resin will also flake off during bending.

All of these are continually building up in and around your press brake tooling, getting compressed and stuck to it. If you aren’t changing your bending tools regularly — or even if you are, but don’t clean it in between shifts— you can significantly affect the bending accuracy of your press brake. For example, if enough dust collects to change your press brake tooling height by two thousandths of an inch, you might throw off the accuracy of your bends by as much as two degrees.

Besides cleaning the working surfaces of the bending tooling, you should also clean underneath your bottom die and wipe off the top part of your top bending punch (where it seats to the machine). It is also a good idea to keep your tooling clean to sight on the exposed surfaces as you are using it.