DESCRI PTI ON OF THE MAI N UN I TS
HOLZMANN Maschinen Austria
www.holzmann-maschinen.at
Seit e 2 9
Metalldrehmaschine / metal turning lathe ED 750 FDQ
1 3 DESCRI PTI ON OF TH E M AI N UN I TS
1 3 .1 H ead st ock
The head stock is mounted on the machine corp. the rotation motion to this gear box is trans-
ferred through V-belts and belt pulley from an el. motor mounted on the guide way.
1 3 .2 Quadrant
The quadrant is destinated to transfer the motion from the head stock to the feed box through
some change gears. It is mounted in the quadrant box. The latter is closed by a cover.
1 3 .3 Feed box
The feed box is fixed to the face side of the machine corp.—just below the head stock. It includes
all the mechanisms, by the help of which is effected the adjustment for selection of the feed or
thread pitches.
Required adjustments for the different values of the feed or thread pitch are realized by the help
of respective drums, located on the front part of the feed box.
1 3 .4 Feed direct ion lever
Putting this lever in the top hole moves the carriage
left along the bed or the top slide toward the work-
piece while spindle is turning counter-clockwise .
Putting the lever in the foot hole moves the carriage
right along the bed or the top slide away the workpiece
while spindle is turning counter-clockwise . If putting
the lever in the middle hole change gears and feed
screw is not turning while spindle is turning .
1 3 .5 Carriage group and it s m echanism s
The carriage group is festinated for fixing and driving the cutting too. It includes five basic parts:
carriage box, carriage board, lower slide, cross piece and upper (top) slide.
1 3 .5 .1
Carriage box
The carriage box is mounted on the carriage board. It contain the mechanisms that are used for
driving the carriage longitudinal and cross feed, as well as the mechanism for engagement of the
nut to the lead-screw while threading and the mechanism for manual feed of the carriage.
Fig. 1
