Girard Associates, Inc. & Girard Engineering, Inc. - Cleveland, Ohio - Forging and Industrial Controls / Enclosures

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Four Full-Function Forming Stations

Well Balanced Distribution

Hotmatics have four full-function forming stations to allow a well-balanced distribution of the forming work. Four closed dies, each with its own ejector. Each station capable of handling forming work inside the die. Which lets you move a lot of metal without overloading individual tools.

SHEARING STATION AND FOUR FORMING STATIONS, FROM LEFT TO RIGHT
AT THE EXTREME RIGHT IS THE STRIPPER PLATE THAT REMOVES THE FINISHED PARTS FROM THE PUNCH<

Tool Holders

The tool holders for both dies and punches are unusually large and deep, permitting each tool to be designed in the best possible way. There's plenty of space for strong composite punches and pre-stressed die assemblies.

Arranged Horizontally

A key point: the stations are arranged horizontally alongside one another. The four dies and the shearing station, all in a row. This makes part transfer from station to station simple and quick: short, straight-line motion, no sliding, no turning. It also means the cooling water can run off without flooding and fouling the next stations.

And one more thing: if a forging should ever fall out of the transfer grippers, it will drop clear without endangering the other tools.

THE SHEARING STATION AND FOUR FORMING STATIONS LINED UP
SIDE-BY-SIDE.

Order of Operation

As a rule, the blank is squared up at the first station to assure effective, uniform metal distribution and to break off any remaining scale. This can be done either by 'pancaking' or inside the die. Closed-die upsetting improves metal distribution and guarantees a consistently accurate blank diameter, which enhances concentricity in the finished forging.

This is how a typical job might be tooled. But the tool designer is by no means bound to this particular sequence of operations. You may wish to use the second station for finish-forming and the third for sizing, or to preform right at the first station if this will provide better metal flow. There's a separate station available for each operation. No need to crowd two different operations into one station. Which obviously means longer tool life.

THIS SHOWS A TYPICAL SEQUENCE OF OPERATIONS: cut-off, forming in three stages, and piercing at the last station.

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