boring 106 selection guide pc connection the force fr is created by tightening the pc screw this results in line contact seating with high repeatable precision .0002 on diameter the geometry of the screw and mating hole in the male pilot creates the resultant force fa boring fa 3 .7 x fr the face to face clamping forces fa are equal to the axial force fa the torsional cutting forces are primarily transmitted by the friction between the mating faces any remaining torque will result in an additional wedge action between the locking screw and the inner member due to the very small resulting wedge angle any increased torsional force ft will be transformed into a very strong axial clamping force fa2 the cross pin not shown helps in alignment of the pc screw and transmits extreme forces connection diameter pc diameter pc2 pc3 pc4 pc5 pc6 pc7 .94 1 .22 1 .54 1 .97 2 .52 3 .54 1-800-866-5872 www.parlec.com
|
boring 112 shape selection guide inserts information square for rough boring through holes and castings to avoid exit hole breakout four usable edges for maximum insert life 80° diamond for rough boring to a shoulder or deep bore depths where maximum rigidity of the bar is required for finishing small diameters where maximum edge strength is required triangle for finishing with three corners for maximum insert life trigon for rough boring when large depth of cut is required or when extreme core shift is experienced boring carbide grade select the proper insert grade from pages 114-115 material type machine capabilities and type of hole i .e interrupted cut can affect the grade of carbide used coated longer service life at higher speeds uncoated cermet less expensive and effective in materials for which coatings do not add any benefit yields the highest speed and durability for selected materials radius finish bar rigidity insert life and engineering features of the workpie
|
modular shanks din-69871 shanks form adb boring 117 form b coolant can be closed with a screw for through spindle coolant applications boring din 40 taper part number connection size p bcld weight lbs d40-pc2-80 d40-pc3-80 d40-pc4-50 d40-pc4-80 d40-pc4-160 d40-pc5-80 d40-pc6-80 d40-pc6-100 d40-pc6-160 pc2 pc3 pc4 pc4 pc4 pc5 pc6 pc6 pc6 4 .72 4 .72 3 .23 4 .72 7 .87 4 .72 4 .80 5 .51 7 .87 .94 1 .22 1 .54 1 .54 1 .54 1 .97 2 .52 2 .52 2 .52 3 .34 3 .15 1 .38 2 .87 6 .02 2 .48 2 .00 2 .72 5 .08 1 .93 1 .77 1 .50 4 .25 1 .10 0 .63 1 .34 3 .70 3 .15 3 .19 1 .85 3 .15 6 .30 3 .15 3 .43 3 .94 6 .30 2 .4 2 .6 2 .2 2 .8 4 .4 2 .8 3 .0 3 .3 6 .4 din 50 taper part number connection size p bcld weight lbs d50-pc2-100 d50-pc2-130 d50-pc3-110 d50-pc3-160 d50-pc4-100 d50-pc4-160 d50-pc4-200 d50-pc5-100 d50-pc5-160 d50-pc6-100 d50-pc6-160 d50-pc6-200 d50-pc6-260 d50-pc6-320 pc2 pc2 pc3 pc3 pc4 pc4 pc4 pc5 pc5 pc6 pc6 pc6 pc6 pc6 5 .51 6 .69 5 .51 7 .87 5 .51 7 .87 9 .45 5 .51 7 .87 5 .51 7 .87 9 .
|
boring 122 extensions modular components extensions boring extension pc4-pc4e1 shown here extensions part number connection size b c weight lbs pc2-pc2e1 pc2-pc2e2 pc3-pc3e1 pc3-pc3e2 pc4-pc4e1 pc4-pc4e2 pc5-pc5e2 pc5-pc5e3 pc6-pc6e2 pc6-pc6e4 pc7-pc7e4 pc7-pc7e6 pc2 pc2 pc3 pc3 pc4 pc4 pc5 pc5 pc6 pc6 pc7 pc7 .94 .94 1 .22 1 .22 1 .54 1 .54 1 .97 1 .97 2 .52 2 .52 3 .54 3 .54 1 .18 1 .77 1 .18 1 .77 1 .57 2 .36 2 .36 3 .54 2 .36 3 .94 3 .94 6 .30 .3 .4 .4 .5 .8 1 .1 1 .9 2 .8 3 .0 5 .0 9 .9 17 .0 heavy metal extensions heavy metal extension pc4-150hm15 shown here heavy metal extensions part number connection size b c weight lbs pc2-094hm11 pc3-125hm14 pc4-150hm15 pc2 pc3 pc4 .937 1 .250 1 .500 11 .42 13 .78 14 .75 3 .9 9 .0 13 .0 part numbers in bold face are in-stock items not reccomended for use on lathes with twin bore units consult parlec s applications department 1-800-866-5872 www.parlec.com
|
precision finish boring small diameter boring bars bushings .188 to 1 .000 4 .78mm to 25 .4mm boring bars boring 127 boring bar sb37-43t105 shown here boring bars .188 1.000 diameter part number coolant part number bore dia min bore dia max reduction bushing max bore depth a dia c bar material insert type size insert screw insert screw wrench cb15-18c056 sb18-18c052 cb18-21c054 sb18-23c052 cb18-23co54 sb18-28to53 cb18-29to54 sb25-29co53 sb25-30to54 cb25-30co54 cb25-31to54 sb31-36t054 cb31-37to56 sb37-43t105 cb37-44t107 sb50-58t106 cb50-59t107 sb62-71t117 cb62-71t118 cb15-18c056c cb18-23c054c cb18-29t054c cb25-30c054c cb25-31t054c cb31-37to56c sb37-43t105c cb37-44t107c sb50-58t106c cb50-59t107c sb62-71t117c cb62-71t118c cb62-83t117c sb62-83t114c .188 .188 .218 .232 .232 .280 .290 .290 .300 .300 .310 .362 .372 .430 .440 .580 .590 .717 .717 .83 .83 .218 .218 .232 .300 .300 .300 .310 .310 .362 .362 .372 .430 .440 .580 .590 .717 .717 1 .000 1 .000 1 .45 1 .45 xxrb-1
|
boring 132 precision finish boring 5 .95 to 8 .27 151mm to 210mm for use on 40 tapers with 15 lb tool change limit reduces inventory interchangeable with other sizes boring finish assembly pc6-7108 shown here finish assembly with attached finish head shown here boring range inches boring range min max extension base extension base weight lbs boring head 5.95 8.27 pc6-7108 7.1 7100-2816 boring range metric boring range min max extension base extension base weight lbs boring head 151.13 210.06 pc6-7108 7.1 7100-2806 part numbers in bold face are in-stock items 1-800-866-5872 www.parlec.com
|
boring 138 boring heads twin bore roughing from .95 to 6 .00 25mm to 152 .4mm independent height and diameter setting permits balanced cutting with production of almost perfectly round holes from the beginning irrespective of core shifts two height balanceable cutting edges results in metal removal at rates almost 4 times that of a single cutter height adjustments are made with a cam that supports the insert holder where needed at the furthest radial point each insert holder can be adjusted individually in diameter with a dial screw for fast easy set-up operations balanced or stepped cutting can be done with the same set of insert holders permitting heavy stock removal and eliminating the need to purchase two sets of insert holders standard through-spindle coolant capability cools the insert and flushes chips iso standard inserts requires no special expensive inserts square scmt insert holders with 6° lead for through hole boring or extreme core shifts diamond ccmt insert h
|
twin bore roughing 80° diamond inserts boring 143 80° diamond insert shown here size ccmt 06 part number ic clearance angle r t rake angle hd grade type periphery c061615c2p c063115c2p c061620c2g c061615ttp c063115ttp c061615ctp c063115ctp c063115sng c061615sng c061615vng c063115vng c093115vng part number .250 .250 .250 .250 .250 .250 .250 .250 .250 .250 .250 .375 ic 7° 7° 7° 7° 7° 7° 7° 7° 7° 7° 7° 7° clearance angle .016 .031 .016 .016 .031 .016 .031 .031 .016 .016 .031 .031 r .094 .094 .094 .094 .094 .094 .094 .094 .094 .094 .094 .156 t 15° 15° 20° 15° 15° 15° 15° 15° 15° 15° 15° 15° rake angle .110 .110 .110 .110 .110 .110 .110 .110 .110 .110 .110 .173 hd c2 c2 c2 tt tt ct ct sn sn vn vn vn grade uncoated uncoated uncoated coated coated cermet cermet coated coated coated coated coated type pressed pressed ground pressed pressed pressed pressed ground ground ground ground ground periphery boring size ccmt 09 c091615c2p c093115c2p c091620c2g c091615ttp c093115ttp c091615ctp c093115ct
|
boring 148 installing insert holders technical information operating instructions twin cutter 1 remove the two insert holder clamps and set aside 2 place the insert holders in the head making sure the slot in the bottom of the insert holder engages the head of the diameter adjusting screw 3 install the insert holder clamps cap screw on size two make sure that the nut is flush with the end of the screw 4 snug up the insert holder clamps it is recommended that the parlec twin boring heads be adjusted on a tool presetter refer to parlec parsetter catalogs for more information see next page boring adjusting for balanced cutting balanced cutting allows both cutting edges to work simultaneously a properly balanced twin cutter may be fed at almost four times the rate of a single cutter .make sure the height cam is located with the reference mark lowest point in the vertical position as shown 1 loosen the insert holder clamps re-tighten enough to put drag on the insert holder 2
|
technical information rough boring chip formation boring 153 chip formation when rough boring is very important an ideal chip should be c shaped or look like a six or nine the chips should also be short as illustrated below boring proper chip formation is a function of the feed rate and the chip breaker on the insert generally the feed rate should be 25 to 35 of the width of the chip breaker if the chip does not break increase the feed rate provided that the following conditions exist the part and the fixture are sufficiently rigid the machine has sufficient horsepower the machining allowance does not exceed the stated maximum the tool is not overly long if the chip does not break with the increased feed rate it may be necessary to change to an insert with a smaller chip breaker it is important to remember that the thin wide chip produced from a low feed rate and a large machining allowance is difficult at best to break as a general rule the feed rate should be 10 to 30 of th
|
