This attachment gives you the ability to stop individual spindles while the others continue to revolve. The ability to stop individual spindles allows you to use other attachments to do operations such as cross drilling, spindle locating and milling that are not possible with all spindles revolving. You can also use stopping clutch’s to align hex material in the work spindles to a hex pick off collet.

The speed that your spindles are revolving is limited to 2500 rpm due to the fact that you are disengaging and reengaging clutch’s in cycle. The stopping clutch’s can be left in the machine to run parts that do not require them, but should be routinely disengaged and reengaged to insure the clutch’s function properly when needed.

INSTALLING SPINDLE STOPPING CLUTCHES

The 8-SA Work Spindle Head must be removed from the machine to install Spindle Stopping Clutches. After removal, the head must be partially disassembled. The Inner Spindles, Outer Spindles, Spindle Gears, Left Slide Bracket 5080-400-3-1, Center Drive Shaft & Gear, and Tool Post Stop 2186-SA must be removed. The 8-SA can then be set in a vertical position resting on the Bearing Retainers 5080-389. The Ring Gear 936 will drop down, resting next to the Index Gear 5133. This will leave an opening between the ribs of the head in which the clutches can be installed. The Clutch Forks 2485-3 must fit freely between the ribs, but with no side play. If the opening is tight, the ribs may have to be filed to allow a slide fit. The Tool Post Stop 2186-SA will require removal of the center drive bushing and installation of the Center Post 2496-4-6 (ref. Drawing 2496-57-SA). The Tool Post Stop 2186-SA is then bolted to the 8-SA. The clutches are then inserted between the ribs with the gear end down. The Forks 2485-3 will be retained in a slot turned on the Center Post 2496-4-6. The gear end of the clutch can be tipped toward the center of the head to allow the Ring Gear 936 to be raised into a position where the spindle stopping clutch gears can be meshed by tipping the clutches back to a vertical position. Support the Ring Gear with blocks. Insert the outer spindles through the clutches and secure with three cone point screws.

The outer spindles should be fitted into the clutches prior to assembly. There may be some residue on old spindles which requires removal. All parts removed from the 8-SA should be reinstalled in the same position. The head can then be reassembled on the bench and reinstalled on the machine.

In the future we will be featuring other attachments that will require the use of the stopping clutch.

For pricing information contact your Davenport representative.

Part # 2496-57-SA.