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Allegheny York recently took delivery on a 2023 DMH 850 CNC Machine which replaced a 2003 DMH 600 CNC Machine.

Max. turning diameter: 850 mm
Main drive power: 17 kW
Total weight: 6,000 kg
Dimensions (L × W × H): 3,480 × 2,080 × 2,060 mm
Max. bar diameter: 65 mm
Slide traverse X/Y/Z: 355/-/610 mm
y-axis: no
c-axis: no
Max. speed main drive: 5,000 1/min.
Max. speed driven tools: 0
Spindle nose per DIN 55026: A 2-6
Power input: 27 kVA
Tool size: VDI 30
Turret positions: 8
Rapid traverse X/Y/Z: 30/-/30 m/min.

The DMH 850 is suited to seals with a turning diameter up to 850 mm. The medium-format all-rounder doesn’t just stand out with its precision and speed. It also has unbeatable specialisms: our DMH850 model is especially suited to elastomers because its programming and turning technology are optimized to elastomer processing.

Special thanks to T.L. Jackson Construction Inc. for their great delivery services. https://gcsbuilt.com/

CNC machining is a term commonly used in manufacturing and industrial applications. But exactly what is CNC? And what is a CNC machine?
What is CNC Machining?

CNC 101: The term CNC stands for 'computer numerical control', and the CNC machining definition is that it is a subtractive manufacturing process that typically employs computerized controls and machine tools to remove layers of material from a stock piece—known as the blank or work piece—and produces a custom-designed part. This process is suitable for a wide range of materials, including metals, plastics, wood, glass, foam, and composites, and finds application in a variety of industries, such as large CNC machining, machining of parts and prototypes for telecommunications, and CNC machining aerospace parts, which require tighter tolerances than other industries. Note there is a difference between the CNC machining definition and the CNC machine definition—one is a process and the other is a machine. A CNC machine (sometimes incorrectly referred to as a C and C machine) is a programmable machine that is capable of autonomously performing the operations of CNC machining.

Subtractive manufacturing processes, such as CNC machining, are often presented in contrast to additive manufacturing processes, such as 3D printing, or formative manufacturing processes, such as liquid injection molding. While subtractive processes remove layers of material from the workpiece to produce custom shapes and designs, additive processes assemble layers of material to produce the desired form and formative processes deform and displace stock material into the desired shape. The automated nature of CNC machining enables the production of high precision and high accuracy, simple parts and cost-effectiveness when fulfilling one-off and medium-volume production runs. However, while CNC machining demonstrates certain advantages over other manufacturing processes, the degree of complexity and intricacy attainable for part design and the cost-effectiveness of producing complex parts is limited.

While each type of manufacturing process has its advantages and disadvantages, this article focuses on the CNC machining process, outlining the basics of the process, and the various components and tooling of the CNC machine.