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Copyright © 2020 Quality Machine Tools, LLC

PM-835S v3 2020-10

MILLING HEAD COMPONENTS  

Fig 1

There may be detail differences 

between this representative draw-

ing and the machine as supplied. 

Off-the-shelf hardware may not 

be shown in all instances (some 

locations call for US threads, some 

Metric). To order replacement parts 

from Precision Matthews, give the 

Model number, Serial number, and 

reference number on this drawing. 

Содержание PM-835S

Страница 1: ...e motor Full featured milling head with powered quill feed Headstock tilt 90o left right plus fore aft tilt for tramming Precision spindle in chrome plated and ground quill Hardened and ground sliding...

Страница 2: ...rty damage or serious personal injury There are many alternative ways to install and use a milling machine As the owner of the machine you are solely responsible for its proper installation and safe u...

Страница 3: ...ravel 22 5 Y axis travel 10 0 Z axis travel 15 0 Spindle nose to table surface min 2 0 max 17 0 Spindle centerline to Z ways min 8 75 max 18 5 Ram travel 10 Quill travel 5 0 Quill diameter 3 375 Left...

Страница 4: ...on Precision spindle high quality angle contact bear ings runout less than 0 0002 Head pulleys balanced for smooth operation One shot lubrication SUMMARY OF FEATURES 1 2 11 10 9 8 7 13 3 4 5 12 6 14 1...

Страница 5: ...ble saddle knee or any other movable part until everything has been thoroughly cleaned and lubricated see below Figure 2 2 Head swivel head forward backward tilt Use a hex wrench to crank the head clo...

Страница 6: ...peration of the machine Check the available power supply for compatibility with the motor Check for correct spindle rotation With the motor switch set to FWD and the SPEED RANGE selector set to HI the...

Страница 7: ...n be hazardous Be sure the work area is properly lit Never leave chuck keys wrenches or other loose tools on the machine Be sure the workpiece toolholder s and machine ways are secure before commencin...

Страница 8: ...the lock levers before moving the table especially under power if so equipped POSITIONING THE KNEE A micrometer collar graduated in 0 001 divisions allows the knee elevation to be accurately set when...

Страница 9: ...oximately 0 25o so a more accurate means of angle measurement will be needed if the project calls for a precise offset or for everyday milling and drilling true vertical in both axes This is done by t...

Страница 10: ...chucks and other arbors with the standard 7 16 20 inter nal thread When installing or removing tooling pull the spindle brake handle toward you to stop the spindle rotating Figure 3 10 To install a to...

Страница 11: ...ations calling for better control of tool depth use the fine feed handwheel 1 With the spindle stationary disengage the quill auto feed crank at right of the head 2 Unlock the quill 3 Set the quill au...

Страница 12: ...ping the quill auto feed lever to the right The tripping point is accurate only to within 0 01 For a more precise end point 0 001 hand feed to a dead stop Feed rate selector 1 Set the micrometer depth...

Страница 13: ...3 16 Auto feed schematic The auto feed system s many inter dependent parts are ad justed in manufacture for trip ping action and clutch torque They will not normally need attention If you are conside...

Страница 14: ...can be used for front to back tramming also left to right as here For more sensitive left to right tramming use the larger sweep X Y AXIS POSITIONING BY COUNTING DIVISIONS Note The following procedur...

Страница 15: ...est spindle speed this will allow you to sweep the indicator holder easier from side to side 9 Reposition the 1 2 3 block to the opposite location on the table 10 Swing the indicator holder to the new...

Страница 16: ...e lube action one or two pump strokes will usually be enough Distribute the oil evenly by running the table full travel in both axes Also check the following 1 X Y axis leadscrews ISO68 oil Vactra No...

Страница 17: ...ror process that takes time and patience Aim for the best compromise between firmness and reasonably free table movement Too tight means accelerated wear on the ways leadscrews and feed motors if inst...

Страница 18: ...of lost motion depends on the user but 0 005 is generally a good compromise Smaller numbers are possible but overdoing it can lead to premature wear of leadscrew and nut Each leadscrew nut comprises...

Страница 19: ...ail differences between this representative draw ing and the machine as supplied Off the shelf hardware may not be shown in all instances some locations call for US threads some Metric To order replac...

Страница 20: ...89 Overload clutch plunger Z7186 90 Quill pinion shft bshing Z7187 91 Spacer Z7188 92 Feed worm gear Z7189 93 Overload clutch B Z7190 96 Ovrload clutch trip lever Z7191 99 Clutch cover Z7192 103 Cam...

Страница 21: ...Tools LLC PM 835S v3 2020 10 QUILL AUTO FEED POWER TAKE OFF SCHEMATIC Fig 2 This drawing shows major components of the drive train in principle only It is not to scale The numbers here refer to Millin...

Страница 22: ...detail differences between this representative drawing and the machine as supplied Off the shelf hardware may not be shown in all instances some locations call for US threads some Metric To order repl...

Страница 23: ...8 23 Timing belt Z7269 24 Pulley flange Z7270 25 Timing belt pulley Z7271 26 Pulley flange Z7272 29 Ball Knob Z7399 30 Spindle HI LO cam lever Z7011 31 Cam ring Z7012 32 Cam ring pin Z7275 34 Brake ha...

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