Walton RP
405 Clearvue
Bench
Mounted Reflex Projector
The Walton RP 405 Clearvue Projector provides, in the same compact form as the highly successful RP 305, a
projector having a larger screen and workstage. As will be seen from
the specification, this machine provides a projector having a 405mm (16)
screen. Like the RP 305, the RP 405 has a fibreglass case reinforced by an internal rigid frame. We have
fitted a specially developed high quality optical system, and a full range of
magnifications from x10 to x50 is available. The machine is supplied complete
with surface illumination through fibre optic light guides, and the 150 watt
light sources to both the profile and surface illumination units are fan
cooled. These systems provide a brilliant image to the screen, which is
etched with crossed lines and a 360Ί protractor scale with a flat glass
vernier which enables very fine angular measurements to be obtained.
Projection Lenses
The lenses are fully corrected precision projection
lenses, specially designed and manufactured by one of Europes leading lens
makers. They provide a sharply defined and accurate image, free from
aberrations and distortion over the entire screen area.
Separate condensers are supplied for each lens
magnification and both are quickly interchangeable without the necessity for
any kind of adjustment. All optical components are specially coated to give
maximum light transmissions and freedom from reflections. Magnifications of
x10, x20, x25 and x50 are available.
The
Mirror
The mirror is 25mm (1) x 250mm (10) dia optical
glass, worked flat to within 30 millionths of an inch 0.00003, and spherically
true to within 2 millionths 0.000002. The front surface is fully aluminised
and silicon monoxide coated to give an extremely durable and highly effective
mirror surface.
The
Screen
The 6mm thick screen is of optical flat glass, ground
to produce sharp and distinct images with maximum contrast. It is etched with
crosslines. The edge has a 360Ί protractor scale and the unit incorporates a
flat glass vernier which allows accuracy adjustable to 5 minute of arc. The
screen is mounted on Teflon rollers and is driven by a hand-wheel conveniently
mounted. This unit also contains a locking device. A full range of screens
is available and these are readily interchanged by simply swinging clear the
top roller and removing and replacing the appropriate screen. The full area
of all screens is available for use and overlays are mounted with hairpin type
clips.
Light
Source
A light source for profile projection is fan cooled and
a 150 watt Tungsten Halogen bulb is fitted. A raking light adjustment is
provided to enable the inspection of screw thread forms, etc., to be inspected
normal to axis.
Filters
Filters are available in either Red, Green or Yellow
and are easily fitted or changed. The green and Yellow filters are
recommended for inspection procedures involving long periods of viewing. The
red filter will give contrast when surface illumination is being used in
conjunction with profile projection.
The
Measuring Stage
The measuring stage which is supplied complete with
centres is 380mm (15) x 100mm (4) and is adjustable in vertical, horizontal
and focusing planes. Vertical movement is actuated by a precision lead screw,
and controlled for fine movement by the easily reached hand-wheel. Horizontal
and focusing movements are controlled by precision racks and pinions. The
simple and quick adjustment of the measuring stage is one of the major
features of the Walton RP 405 Clearvue Projector, offering great advantages to
the production line operation for checking purposes. A tee-slot enables
centres and other accessories to be accurately fitted. A non-glare treatment
is applied for minimum reflection.
Digital Indicators
Digital indicators are fitted to both the vertical and
horizontal planes and enables accurate measurements to be taken in both axes.
The indicators offer dual imperial or metric readings over 25mm (1) travel.
Surface Illumination
Surface Illumination is built into the machine, and a
separate light source is provided. This comprises of a 150 watt Diacrylic
bulb. Light is carried via two fibre optic light guides to the viewing
surface, and the light transmitting heads may be adjusted to any angle by
means of adjustable arms. The entire unit is cooled by a fan, thus
guaranteeing that maximum life is obtained from the bulb.
Flat
Object Holder
A flat object holder is available for measuring and
holding thin and flat objects which are difficult to hold be conventional
means.
Dust
Cover
Each machine is supplied with a heavy duty plastic dust
cover.
The
Standard Machine
The Standard Machine is supplied complete with fully
equipped workstage, centres and vee blocks, two digital indicators, surface
illumination as standard, 405mm (16) dia protractor screen and dust cover.
Lenses and condensers of x10, x20, x25 and x50 magnifications are available at
extra cost.
Workstage
Dimensions: 380mm x 100mm (15 x 4)
Lateral travel 170mm (6Ύ)
Vertical travel 75mm (3.0)
Centres
Max dia of work 88mm (3½)
Max length of work 265mm (10½)
Front working distance
X10 78.5mm (3.3/32)
X20 53.5mm (2.2/32)
X50 21mm (7/8)
Voltage
240/220
110/120
Lamp Projection
24V 150W
Lamp surface illumination
12V 150W Diacrylic
Overall dimensions
Height 762mm (30)
Width 610mm (24)
Length 1117mm (44)
Recommended bench height
762mm (30)
Screen diameter
405mm (16)
Weight
52 kilos (115lb)
