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CNC Machining of Brass Knobs

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Brass Residential Doorknobs
Brass Residential Doorknobs

Residential Doorknobs
Residential Doorknobs

As a leading manufacturer of precision machined parts, Schenke Tool Co. is used to handling projects across a wide range of applications and industries. In the case study below, we help a returning client create a unique, aesthetically pleasing brass doorknob for a residential construction project.

The Problem
Construction projects - especially residential ones - are often guided by the aesthetics of the individual stakeholders involved. Therefore, it often becomes necessary to customize and design products around the specific tastes of the people involved. Recently, a customer who had worked with Schenke Tool Co. in past approached us to request a unique, heavy brass doorknob for a residential application.

They required a 2-inch octagonal knob with a length of 1.5 inches, to be used specifically for cabinets and doors. The client required fewer than 100 units of the product, which needed to be of the highest possible quality. A schematic of the brass knob was also provided.

As a manufacturer focused on precision production of specialized parts, Schenke Tool has a wide range of advanced equipment at our disposal; our team can provide robotic welding, precision waterjet cutting, and stamping services, among many others. To meet this client’s unique needs, we first needed to identify the best approach for manufacturing the brass doorknobs; cost and efficiency of production would depend on optimization of the manufacturing process.

The Solution
To meet the unique requirements of this particular project, we determined that our advanced 4-axis live tooling CNC machine was the best choice. With the ability to reproduce the schematic precisely and meet a 0.0001-inch precision tolerance, this CNC milling machine was perfectly suited for the job.

Capable of milling parts up to 18 inches and turning parts up to 10 inches, and milling parts up to 30 inches in length and turning parts up to 20 inches in length, this machine could easily manufacture the knobs with the schematic as input. The schematic could be easily fed to the machine either as a CAD file or through the use of other illustrating software tools, such as SolidWorks, STEP, or Adobe Illustrator. This makes the manufacturing process much more flexible and efficient.

This versatile CNC machine can also handle a variety of materials, ranging from relatively hard elements such as titanium and carbon steel to softer materials like aluminum, brass, and copper. In this particular project, the machine was used to manufacture the specialty doorknobs using brass as a substrate. The design was octagonal, and the manufacturing process involved a significant amount of milling in addition to live tooling and turning. Multiple rounds of processing were necessary to ensure the finished product was smooth and aesthetically pleasing while conforming to the specified requirements.

The Result
Employing 4-axis live tooling allowed the products to be delivered in a very short turnaround time. Also, the high precision naturally allowed for less material waste. These factors considerably reduced the client’s production costs.

And while this specific example involves brass doorknobs, it should be noted that the equipment and manufacturing process can be applied across industries. This process is suitable for applications in diverse fields, such as agriculture equipment manufacturing, military applications, and semiconductor manufacturing, as well as applications within the aerospace and automotive industries. The manufacturing process discussed in this case study can also be employed for prototyping, specialty production, and low-volume production. Lead times can be adjusted to meet urgent or unusual requirements.

Learn More
With advanced technological expertise and a deep commitment to customer satisfaction, Schenke Tool Co. can provide a solution to any kind of industrial tooling requirement. To discuss your application with an expert, contact the team today.

Brass Doorknob Highlights

Project Name & Description
  • Live Tooling of Brass Door Knob
Capabilities Applied/Processes
  • CNC Milling
  • CNC Turning
  • Live Tooling
Equipment Used to Manufacture Part
Overall Part Dimensions
  • 2" Octagon
  • 1.5" - Length
Tightest Tolerances
  • +/-.001"
Material Used
  • Brass
Industry for Use
  • Custom Hardware
  • Residential Construction
  • 10 - 100+
Delivery Location
  • USA
Standards Met
  • Customer Schematics

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