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New Metal Product Design And Development CNC Machining Parts Manufacturers
CNC Machining and Engineering Design Guide
CNC Machining Tolerances | General Tolerances | Tolerances on metals will be held to +/- 0.005" (+/- 0.127 mm) in accordance with ISO 2768 unless otherwise specified. Plastics and composites will be +/- 0.010”. | ||
Precision Tolerances | can manufacture and inspect to tight tolerances per your drawing specifications including GD&T callouts. | |||
Size | Maximum Part Size | Lathe can make size to: 1,575 mm x 813 mm x 813 mm; Turnning and Milling can make size to: 2,032 x 1,219 x 610 mm | ||
Feature | Minimum Feature Size | 0.020” (0.50 mm). This may vary depending on part geometry and chosen material. | ||
Internal corner fillets | Design internal corner fillets to be 0.020” - 0.050” greater than a standard drill size for the radii. Follow a drill diameter to depth ratio of 1:6 (1:4 recommended) as a guideline for internal corner radii. | |||
Floor fillets | Design floor fillets smaller than corner fillets to allow the same tool to clear material from the interior. | |||
Undercuts | Always design undercuts to standard sizes and away from corners so they are accessible by the cutting tool. | |||
Tapped/threaded hole depth | Provide tool clearance slightly beyond the tapped hole depth to ensure complete threads. | |||
Complexity | Keep the number of small cuts to a minimum to reduce CNC machining costs; only design in the necessary features to balance function with aesthetic. |
Turning represents a machining technique where a cutting tool, often a non-rotary tool bit, follows a helical toolpath by moving predominantly linearly as the workpiece undergoes rotation.
CNC lathe is a subtractive method to prototype shapes. With the G-Code created, a blank bar of stock material is loaded into the chuck of the lathe's spindle. The chuck holds the workpiece in place while the spindle spins. When the spindle is up to speed, a stationary cutting tool is brought into contact with the workpiece to remove material until the desired geometry is achieved.
FAQ:
Q:Where is your factory?
A:We are located in ShenZhen ,China.
Q: What kind of drawing is perfect ?
A:2D drawing ( PDF, DWG/DXF) 3D drawing ( STEP, XT, IGS,SolidWorks parts )
Q:Do you accept the OEM sample and small production ?
A:Welcome ! the sample can help you verify your design and our quality !