Cross Slide –
The hand wheel moves the compound slide across the lathe bed. Turning the dial clockwise
moves the slide away from the operator. The motion of this slide is used for facing a workpiece and when
advancing a cut for reducing a diameter. The dial has 100 divisions with each division representing
0.001” (one thousandths of an inch) of motion for the slide. The label above the dial reports that each line
represents 0.002”. It is best to think of this as the amount of reduction in diameter on the part per line on
the dial. Therefore, rotating the dial 10 marks will move the slide 0.010” and multiplying this amount by
0.002” equals 0.020”. Therefore, the diameter of the part will be reduced by 0.020”
Apron –
The longitudinal motion of the apron is controlled by the hand crank at the end of the lathe bed.
See Figure 23.
The motion of this slide is used when cutting along the length of a workpiece. This slide
can also be operated with the power feed feature.
Figure 23.
Hand crank for the apron,
Graduated Dials –
Each dial can be rotated without turning the hand crank. This is helpful because the
dial can be set to zero after the tool bit touches the part and the location of the slide and tool bit will be
known. The graduated dial can be adjusted by holding the hand crank with one hand and turning the dial
with the other.
TAILSTOCK CONTROLS
The tailstock comes supplied with a handwheel with graduated dial, barrel lock, tailstock lock and offset
feature.
Figure 24
shows the locations of each.
Tailstock Handwheel –
Turning the handwheel advances or retracts the barrel in the tailstock. The
graduated dial on the handwheel is adjustable.
Barrel Lock Lever –
This lever locks the tailstock barrel in place.
Tailstock Lock Lever –
This lever locks the tailstock in place on the lathe bed.
Offset Mechanism –
Loosening these bolts allows the tailstock to be offset from centre by turning a
screw. This feature will allow taper turning when a workpiece is held between centres.
Figure 24.
Detail of tailstock controls
1.
Tailstock Handwheel
2.
Barrel Lock Lever
3.
Tailstock Lock Lever
4.
Offset Mechanism
Chester UK Model B
17
