Application:
for the Determination of the angle and
form errors on outside and inside tapers and parts with angular surface and
from tests of cylindrical parts.
Design Features:
On the rigid base which factures
hardened and precision lapped guide - ways the generously dimension measuring
carriage is mounted on dust-proof high precision ball bearing. The wide sine
table, provide with T - slots, supports an inclinable mounting table for the
accommodation of the various fixtures required for the different taper checks.
The sine table can easily be lifted by a convenient releasing lever which in
turn facilitates the mounting of the parallel gauge blocks. The measuring head
is height adjustable on the extra rigid column by means of a spindle. A swivel
support arm is mounted on the sliding head and supports the lever type
inductive gauging head to be used in conjunction with either the electronic
comparator or the electric recorder. These instruments permit readings and
evaluation of the measuring results with maximum accuracy.
Operation Principle:
This Parts are checked at,
(1) Is mounted on the inclinable
mounting table.
(2) The fixture is obliquely
adjustable in reference to the axis of the part under test, thus permitting the
perfect alignment of the part. At first at horizontal sine table.
(3) The upper crest line.
(4) Of the taper is aligned parallel
to the guide-ways of the measuring carriage.
(5) By inclining the mounting table.
parallelism of this crest line is checked by moving the measuring carriage back
and forth while simultaneously gauging the crest line. If required, adjustments
can be made by means of the adjustment screw.
(6) until the inductive gauging head
(7) does not cause a deflection on the
indicating instrument. The sine table is then swivelled around the entire taper
angle by inserting a gauge block
(8) which corresponds to the ideal
angle α. At this point the taper crest line
(9) is parallel to the guide ways,
provided the taper to be checked corresponds to the ideal value. This parallel
alignment is checked by gauging the lower crest line. All taper angle and form
errors are read on the indicator.
By means of the said alignment
procedure, all possible influences of mounting inaccuracies are eliminated.
Therefore, the mounting surface of the part under test does not require
precision machining nor does it require accurate centring in reference to the
taper.
Features of taper testing machine:
Max. taper angle
|
30º
|
Max. taper length
|
275mm
|
Range of taper gauges obtained with
appropriate accessories
|
|
Morse
taper up to
Steep
taper up to
Metric
taper up to
|
MK6
Size
60
Size
B 140 / C 140
|
Guiding accuracy of measuring carriage
|
0.5µm
over 100 mm
1µm
over 400 mm
|
Repeatability of measuring result
|
0.5µm
|
Measuring inconsistency
|
=1µm
|
Hard granite base plate
|
1000 x 630 x 150mm
|
Measuring
table mounting surface
Distance of sine rollers
|
110
x 650mm
300mm
|
Travel of measuring carriage
|
400mm
|
Height adjustment of measuring head
|
375mm
|
Speeds of measuring carriage
|
20/5/2mm/s
|
Speeds of measuring head
|
10/5/1mm/s
|
Power supply
|
220 V, 50-60 Hz, 50W
|
Air supply
|
5bar, 1 m3/h
|
Taper Testing Machine:
For reference free determination of
angle and form errors on outside and inside tapers and parts with angular
surface and form test on cylindrical parts.
The taper testing machine consists
principle of the following units:
Measuring Carriage:
With wide surfaces and air cushion
bearing for exact movement on the base plate and along the high guide edge of
the measuring table. With motor-driven, vertically adjustable measuring head on
sturdy column Air filter and air regulating valve provide air for the air
cushion bearings.
Hard granite Base Plate:
For accurate guiding of the measuring
carriage upon an air cushion and for mounting the measuring table. Made of fine
grain black granite of great hardness and stability.
Measuring Table:
Consisting of lever operated sine table
and inclinable mounting table with T-slot for fixing mounting devices for
components to be tested. Self-locking safety device prevents damage of setting
gauge block and mounting surface of gauge block at inadvertent slipping of sine
table. With integrated switch board for controlling all movement of measuring
carriage and measuring head as well as for the selection of testing speeds by
push buttons.
Electronic measuring and recording Equipment:
Consisting of inductive gauging system
for contacting both crest lines without turning the stylus, electronic
indicating instrument for reading the measuring result and also electrical
recorder for evaluation of taper angle errors and taper forum errors.
