For Machines Mfg. Since 7/09 | O P E R A T I O N | Model SB1016/SB1036 |
However, other tooling without lock tangs, such as the remaining four shown in Figure 66, can still be used if the following two conditions exist:
1.If the potential torque load from smaller drill chucks, drill bits, and centers will not override the strength of the MT#5 tapered fit, the tool can be used.
2.Usually the end of the arbor or tool that fits into the quill must be solid and a standard length.
If the center or tooling has an open hole in the end of the arbor but is too short to be exposed in the drift slot for removal, then a screw should be threaded into the end of the tool. Covering this hole will provide a solid surface for tailstock pin to push against when the handwheel is backed off for tool removal. Also, these short tools do not seat far enough into the quill to be exposed in the drift slot. As a result, the edge of the drift key cannot contact the tool to push it out of the quill.
Should a tool become stuck under these conditions, remove the quill or handwheel and drive the arbor or tool out with a long punch.
To install a tapered drill or chuck:
1.Lock the tailstock in position, then unlock the quill.
2.Use the tailstock handwheel to extend the quill about one inch out of the tailstock.
3.Insert a tapered drill arbor (Figure 67), or the tapered drill shank, into the quill until the taper is firmly seated. The matching tapers hold the arbor.
Tang
MT#5 Taper
Tang
MT#5 Taper
Figure 67. Inserting drill chuck arbor or tapered drill
bit into tailstock.
To remove a tapered drill bit or chuck arbor:
Hold the arbor or drill bit with a rag, and turn the handwheel counterclockwise until the tooling is pushed out from the tailstock taper.
—If the arbor or drill bit is stuck in the bore and cannot be removed by using the handwheel with moderate force, do not apply extra leverage to the handwheel. Instead, extend the quill to expose the drift key slot in the quill, and use a drift key (see Figure 62) to remove the stuck tool.
