Cooper Tools Quackenbush 158QGDAV Operations Instructions download pdf (Page 17)

turned on, the spindle will rotate at a speed

determined by the motor and gearing. The spindle

➁ rotates with the drive shaft, yet is free to slide or

telescope axially.

Surrounding part of the spindle is the lead

screw driver ➂ that has a gear affixed to one end.

The gear on the lead screw driver is connected

to the motor gearing by a worm and cross shaft

arrangement ➃ and turns the lead screw driver at

a fixed ratio with respect to the spindle. The lead

screw driver rotates when the motor is turned on,

but cannot move axially.

The lead screw ➄ telescopes over the lead screw

driver. The lead screw is internally splined to the

lead screw driver so that it rotates with it while

being free to slide axially. The lead screw will

rotate any time the motor is turned on, but not

move axially until the feed is engaged.

The positive feed is accomplished by engaging

a pair of half nuts ➅ (threaded nuts which have

been sectioned) with the lead screw by rotating

the feed engagement collar. The half nuts are held

stationary by the housing. With the lead screw

rotating and the half nuts engaged, the lead screw

will advance and push the spindle forward.

Since both the feed mechanism and spindle

rotation mechanism are driven from one source, a

fixed rate of spindle advancement is achieved for

each rotation of the spindle.

When the spindle has advanced to the

predetermined depth, the retract stop is tripped,

shifting the feed collar. This action releases the half

nuts, and the spindle and lead screw are returned to

the starting position ready for the next drilling cycle.

Taper-Lok Fixturing

Customized fixtures are constructed to accept

Taper-Lok Bushing Tips. Advanced Drilling

Equipment tools with the Bushing Tips are inserted

into the fixture, twisted and cam-locked into place.

The Bushing Tip‘s tapered flanges fit under the

shoulder of lock screws in the fixture. The Bushing

Tip holds the tool in alignment and absorbs the

thrust and torque of drilling. At the completion of

the drilling cycle, the tools is rotated to unlock, with-

drawn from the fixture and moved to the next position.

Several different types of Taper-Lok Fixturing are

available. The following are the most common.

Location Data for Taper-Lok Clamp,

Lock Screw, and Lock Strip Mounting

Drill Bushing Tool Nose

Tip Series A B Thread (I.D.)

21000 .312 .625 3/4–16

22000 .609 .922 1–14

23000 .734 1.047 1 1/4–12

24000 .859 1.172 1 1/2–12

25000 None 1.562 2–16

B – Radius

(For Taper-Lok

Clamp or Lock

Screw)

Taper-Lok

Clamp or

Lock Screw

design

1/4–20

Hex

Head

Screw

Lock

Strip

Design

Tool Nose

Standard Threaded

Drill Bushing

Lock

Screws

Tooling Fixture

Lock Liners

Method for mounting to

a fixture. A hole is bored

in the jig to accomodate

the lock liner bushing.

The lock ring holds the

lock liner bushing in

position in the jig.

Taper-Lok

Bushing

Direct Mounting

The Serrated Liner is

used in potted or

cast-in-place

installations.

Direct Mounting

Most common mounting

method has lock screws

mounted directly into the

fixture plate. The shank

of the drill bushing tip fits

directly into a bored hole

in the fixture plate.

Lock Strip

This method for closely

spaced holes employs a

lock strip along each side

of the row of holes in the

fixture plate. The flanges

on the Drill Bushing Tip

lock under the extended

edges of the lock strip.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 136 137

Comments to this Manuals

No comments

Cooper Tools Quackenbush 158QGDAV Operations Instructions Page 17

Comments to this Manuals

Related products and manuals for Power drills Cooper Tools Quackenbush 158QGDAV