Operation Manual

2.4.3 Synchronous run ofdifferentialfeed-dog and m ainfeed-dog

Standard

The zero position ofthe step m otors is determ ined by the reference

disk 3.Itcovers the proximityswitch2whenreferencing.

C orrection

–

Setthe value 50 forthe basic position ofthe differentialfeed inthe

program .

–

Actuatethe resetsw itch.

–

Movethe bottom feed tothe frontreversalpointby turning the

handw heel.

–

M easure the distance fro m the frontedge ofthe frontfeed-dog to

the hind edge ofthe hind feed-dog.

–

Movethe bottom feed tothe rearreversalpointby turning the

handw heel.

–

M easure the distance again.

The difference betw een the frontand hind distance m ustnot

exceed 0 m m to+0.02 m m atthe rearreversalpoint.

Shouldthe difference exceed + 0.02mm,this m eans thatthe feed

stre tches the m aterial.

The adjustm entofthe differentialfeed has to be changed to“plus”.

Afteropening the clam ping screw 1 the reference disk 3 has tobe

turned dow nw ards (tow ards the proximityswitch)and fixed again

by the clam ping screw 1.

Shouldthe difference be below 0mm,this m eans thatthe feed

distributes fullness.Thus the adjustm entofthe differentialfeed has

to be changed to“minus”.

Afteropening the clam ping screw 1 the reference disk 3 has tobe

turned upw ards (aw ay fro m the proximityswitch)and fixed againby

the clam ping screw 1.

–

M easure the distance again.

–

R epeatthe setting,ifrequired.

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