What Is a Pantograph? How Does It Work?

Pantograph machines are made by manufacturers in various types and sizes. With these machines, numbers, letters, shapes of a certain form and size, and similar profiles are transferred from a template onto a workpiece. The transfer can be proportionally enlarged or reduced. Another name for this machine is a copy machine (duplicating machine).

A pantograph machine has a stylus (tracer) tip and a cutting tip that operates dependent on its movement. The stylus (tracer) tip can be made to move by hand, semi-automatically, or fully automatically. Fully automatic pantograph machines are preferred for identical parts requiring mass production. These types of machines are programmed and electronically controlled.

machining on a pantograph and mechanical holders — Example of a part machined on a pantograph

Pantographs are used to engrave numbers, letters, and similar shapes onto the punches used in stamping/embossing operations.

How Does a Pantograph Machine Work

Video of a pantograph machine at work

On a manually operated pantograph, the tracer tip is guided by hand around the template. The cutting tip, which moves in tandem with the tracer tip, transfers the shape within the template onto the part.

what is a pantograph machine — A mini pantograph machine

With this machine, especially widely used in bulk mold-making, the manufacturer producing the mold can write their own logo onto the molding surface for advertising purposes. Names belonging to a person or company are also engraved onto nameplates, plaques, and similar items.

On roughly machined plastic, hot-forged, or die-cast bulk molds, the sections with dimensional discrepancies caused by flashed surfaces can be precisely machined on pantographs. In addition, by fitting shank-mounted profile grinding stones onto the cutting-tip spindle, molding surfaces can be precisely ground.

Pantographs also show up as the machines used for duplicating house, workplace, and car keys. (picture above)

Scaled Copying

A pantograph is a mechanism that can transfer motion from a template to another surface at a different scale using mechanical arms.

Engraving and Tracer Milling

Pantograph machines have traditionally been used for mold engraving and letter/shape copying operations.

Replacement by CNC

Today, most of the functions of pantograph machines have been taken over by more precise, programmable CNC milling machines.

Related Questions

The mechanical linkage between the stylus and the cutting tip transfers motion by enlarging or reducing it at a certain ratio. Since this ratio is adjustable, the same template can be used to produce parts at different sizes.

On manually operated machines, the operator’s hand precision directly affects the outcome, and each part can come out slightly different. An automatic, programmed machine repeats the same motion over and over with identical precision, producing identical parts.