TMC 4th Axis - Chuck and Adapter Plate Assembly

Place adapter plate (p/n 28057) on table as shown and install home indicator block (p/n 28061) using a 10-32x1/2 25B socket head cap screw

Lubricate o-rings with white bearing grease prior to installation in adapter plate. Install the following O-rings into the adapter plate: (6) p/n 27805-8, (1) p/n 27805-12, and (1) p/n 27805-9.

Align adapter to cycloidal drive and install (6) SHCS M10-1.5x30 25B screws. Apply a light coat of ISO-32 oil on screws prior to installation. Secure screws hand tight but do not torque them down. (This is done during test and alignment).

Using the hoist, lift assembly and place on bottom (as needed depending on your set up.) Do not lift heavy objects without proper tools.

Using a 0.0001” indicator, magnetic base, and paper underneath the base (to avoid scratching the paint), measure the “runout” on the adapter plate surface shown below. The “runout” cannot exceed 0.0008” (0.02 mm).

If “runout exceeds 0.0008” then loosen the six SHCS M10-1.5x30 25B screws in the face of the adapter plate and tap the adapter plate using the dead-blow hammer and a ¾” diameter aluminum bar, (threading blank for lathes) until the desired “runout” is achieved.

After the adapter plate “runout” is within tolerance, use a torque wrench to tighten the screws in the pattern as shown below to 15 ft-lbs, then to 35 ft-lbs, and finally to 50 ft-lbs following the same pattern each time. Verify that the adapter plate “runout” is still within tolerance after torqueing down the screws.

Secure chuck (p/n 27062-2) to adapter plate by hand tightening (3) M10-1.5X80 25B screws.

Install the test piece into the chuck as pictured below with one line of the test piece even with the face of the chuck. Use the included T-handle to secure the chuck jaws around the test piece.

Using a 0.0001” indicator and magnetic base, position the indicator just behind the front line on the test piece and measure the “runout” of the chuck. The “runout” cannot exceed 0.0008”.

If “runout exceeds 0.0008,” then loosen the three M10-1.5X80 25B screws in the face of the chuck and tap the chuck using the dead-blow hammer until the desired “runout” is achieved. When “runout” is adjusted within specification, tighten the chuck by torqueing the M10-1.5X80 25B screws to 25 ft-lbs.

Verify that the “runout” is still within tolerance after the screws have been torqued down. Remove the test piece from the chuck jaws using the included T-handle. Remove the magnetic base from the UUT and put the dial indicator back in its protective case.