|
|
       CODE: 979.382-014 Buy the DOT:Download/CD-ROM
TITLE(s): ENGRAVER, MACHINE (print. & pub.)
Sets up and operates engraving machine to transfer designs from mills to copper printing
rollers used in color-printing cloth: Lifts printing roller into position on machine with aid of
another worker. Places truing I roller in fixture on head of machine and lowers machine head
until truing roller rests on surface of printing roller. Starts machine to rotate truing roller
against printing roller and turns setscrews until truing roller rotates without horizontal motion to
align head of machine with printing roller. Divides register wheel on machine into divisions,
according to number of times design is to be repeated around printing roller, and marks divisions on
wheel, using chalk. Inserts stud in specified slot on register wheel, replaces truing roller with
mill, and moves pitch finger against stop on head of machine to set mill in register for
engraving. Lowers mill to surface of printing roller, releases catch on weight lever to apply
pressure on mill, and rotates mill one revolution to transfer one repeat of pattern to roller.
Repeats procedure until design has been repeated around circumference of printing roller. Examines
impression of design on roller to detect repeats of pattern that are out of register. Replaces mill
with burnishing roller and works burnishing roller against printing roller to erase defective
impressions. Increases pressure on mill if design is in register and starts machine that works mill
against printing roller to increase depth of impression. Measures depth of engraving, using depth
gauge. Measures width of embossed design on mill, using divider, and converts measurement into
number of teeth on side-shift gear, using conversion tables. Releases pressure on mill and turns
gear specified number of teeth to move mill into position for engraving design adjacent to first
impression and repeats procedure as above until design has been engraved across length of roller.
Engages dog in teeth of gear and pitches design in register. Repeats procedure until design has been
engraved across length of roller. Mounts engraved roller on mandrel of polishing lathe and operates
lathe to remove burrs and smooth roller [PRINTING-ROLLER POLISHER (machine shop)].
GOE: 05.10.05 STRENGTH: V GED: R4 M2 L2 SVP: 8 DLU: 77
ONET CROSSWALK: 92529D Engraver Set-Up Operators
|