SINE BLOCK TAPER TESTING FIXTURES
NO. 9122 SERIES
| Sine Block Taper Testing Fixtures are
designed especially for precise inspection of tapers machined on centers. Tapered work is
mounted between the center, the Sine Block base elevated by gage blocks is one-half the
included angle, and the work is then indicated at both ends to determine the accuracy of
taper. Taper Testing Fixtures
combine a special 20" Sine Block with a pair of identical center heads that may be
positioned anywhere along a t-slot running the length of the block and locked in place or
removed entirely to free the Sine Block for general purpose angle checking. Used in the
horizontal plane, a Taper Testing Fixture becomes an extremely accurate Bench Centers. The
hardened and ground tool steel centers are lapped for precision fit in the heads and may
be locked by turning a knurled knob on each center head assembly.
The surface plate supplied with Sine Block
Taper Testing Fixture is No. 9211, hand-scraped cast iron, described under the 3-Axis
Reference Square. The 20" Fixture takes a 14" x 24" size. The
surface plate is equipped with an end stop that may be clamped in any one of three
positions along one end of the surface plate. |
For the inspector's convenience, surface
plates for Sine Block Taper Testing Fixtures are equipped with a handy three-position end
stop. |
SPECIFICATIONS
Sine Blocks are made of high quality alloy
steel, scientifically heat treated for maximum stability and wear resistance, and
precision ground on all working surfaces. Sine rolls are manufactured of tool steel,
ground and lapped. Center Heads are made of seasoned cast iron, machined in pairs
for accurate alignment of centers. When mounted on the Sine Block , the centers are
parallel to the sine rolls within 0.0002" and parallel to the sides of the Sine Block
within 0.0005".
For the inspector's convenience, surface
plates for Sine Block Taper Testing Fixtures are equipped with a handy three-position end
stop.
TOLERANCES: Taft-Peirce
Sine Block
 |
Working Surface
|
Sine Rolls |
| Size (center distance) |
Flat, square with sides and
parallel within |
Alike, round and straight
within |
Parallel with each other
and with working surface within |
Located at nominal center
distance within plus or minus |
| 20" |
0.00020" |
0.00006" |
0.00020" |
0.0004" |
The recommended surface
plate will be furnished with each Sine Block Taper Testing Fixture unless otherwise
specified.
| Style No. |
Overall
Dimensions |
Center Distance
of Sine Rolls |
Maximum Work
Capacity |
Approximate
Weight |
Price |
| Length |
Width |
Height |
Between Centers |
Diameter |
| 9122-20NSP* |
24-1/16" |
4" |
2-3/4" |
20" |
15" |
6" |
70 lbs. |
$4,803 |
| 9122-20WSP |
24-1/16" |
4" |
2-3/4" |
20" |
15" |
6" |
174 lbs. |
$7,238 |
* No sine plate is included
with this model.
NOTE: See the how to set up sine angle equipment section for exact information.
Setting constants and multipliers are available in Bulletin #818 @ $2.00.
Taft-Peirce Metrology
4141 N. Atlantic Blvd., Auburn Hills, MI 48326
Phone: (248) 391-9100 Fax: (248) 391-7462
E-mail: tools@subtool.com
