Types of Screw Machines Used in Screw Machining

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In general, screw machines are just specialized non-manual metalworking lathes. By definition, a lathe is an industrial device that shapes a workpiece while rotating it around an axis. Screw machined items are produced using both standard lathes and screw machines. Screw machines, as opposed to a lathe, can support several spindles. As a result, screw machines are more frequently employed for large manufacturing. The following are different types of screw machines that are used in screw machining. A popular method of manufacturing in the aerospace industry.

CNC Screw Machines

CNC Screw Machines can carry multiple spindles simultaneously and can manufacture up to six pieces at once. For applications requiring mass production, they are incredibly helpful. More consistent, intricate, and exact parts can be produced with CNC screw machining and CNC turning.

CNC Lathes

Up to six pieces can be CNC machined and turned simultaneously on CNC lathes. However, these pieces are less adaptable and unable to carry as many spindles as a CNC screw machine. On top of all that, they are not as effective for mass production.

Mechanical Screw Machines

Mechanical screw machines include two front camshafts, a motor, eight or more spindles that can operate simultaneously, the ability for metal bar stock to be fastened to the spindles' spring collets, the main drive shaft, a bed lead work shaft, and controls. The bed lead work shaft is powered by the main drive shaft, which also drives the front two camshafts and the motor powers all other activities.

Multi-Spindle CNC Screw Machines

A multi-spindle CNC screw machine is a hybrid machine that bridges the gap between mechanical and CNC screw machine designs. Setting up multi-spindle CNC screw machines requires part design, CAD design, and general system programming. Once set up properly, this is a machine that turns out to be relatively affordable, most notably for long production runs.

Roll Machines

Manufacturers utilize roll machines in order to roll interior screw threads. A thread rolling die that presses into a blank is typically the only component of rolling machines. Machines for rolling threads enable enormous production runs.

Cam Driven Screw Machine

A cam driven screw machine uses a series of cams and various mechanisms in order to control the movement of cutting tools. This enables fast and precision production of small parts. The cam driven system controls the movements of cutting tools that perform a specific operation. With this screw machine, the cams are designed to regulate the movements of the tools. What this does is make sure they operate at the proper speed with the correct amount of force. In the end, a cam driven screw machine is efficient and capable of producing large quantities of parts rapidly and accurately. They can be found in automotive, aerospace, and electronics manufacturing. Anywhere small, precise parts are required in high volume is a good use for a cam driven screw machine.

Swiss Screw Machines

Swiss screw machines are lathes that were developed for the Swiss watch industry for the production of small complex precision parts. Since their introduction in Switzerland during the first industrial revolution, they have become an essential part of producing screw machined parts. With Swiss screw machines, the bar stock is held in place and is advanced through a guide bushing. Only the portion being machined is exposed by the guide bushing. During the process, the material is held tightly in order to eliminate deflection and increase accuracy. All of this allows the machining to be completed in a single operation. During the machining process, the workpiece and the tools move at the same time.

In the end, the preparation time for CNC Swiss screw machines is offset by the reduced labor cost and increased machine efficiency. The guide bushings and tools are both key advantages with the number of tools varying by the CNC Swiss screw machine model. The size and space between the tools are also an additional advantage, as well as the superb surface finish which ultimately eliminates the need for finishing. And thus saves time.

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