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8, R0.

3, R0.

5, R0.

4) . Thick Pi Dao: Use at leaving thick, note surplus remain a way (0.

3) . 3, divide by arbor: Straight staff sword: Straight staff sword is applicable all sorts of circumstances. Brace knife: But the face that does not apply to straight body face and rake to be less than lever rake. 4, divide by edge: Two blade, 3 blade, 4 blade, blade number is more, the effect is better, but business is more, rotate speed and feed are adjusted accordingly, blade counts much life to grow. 5, the distinction of ball knife and knife of flying Dao Guang: Ball knife: Concave side feet is less than ball feet, when planar feet is less than ball R, light is less than (Qing Dynasty is less than bottom horn) . Flying knife: The advantage is horn of can clear background. The comparison of identical parameter: V=R*ω rotate speed is fast a lot of (flying knife) , the thing that muscularity light gives is bright, more ground uses flying knife at waiting for tall appearance, the light in needing with flying knife sometimes. Defect is concave side dimension and planar feet are less than days of flying knife diameter to be less than. 4, CNC cooperates electric spark treatment, the practice with common copper: 1.

The need below what circumstance does copper fair: The knife falls completely not to want to do copper fair, in a copper fair in still have those who fall not to go, appearance is bulgy need to be divided again. The knife can go down, but break a knife easily also need to do copper fair, this needs to be decided according to actual condition. The product of requirement scintilla grain needs to do copper fair. Copper is fair do not do, bone too Bao Taigao, fragile fair and changeful form, be out of shape with strike a light the flower is out of shape in treatment, need mold insert right now. The thing appearance that cupreous fair treatment gives (especially curved surface will be very suitable very even) a lot of problems in a lot of problems in can overcoming gong of essence of life and plot. Ask exact external form or surplus a long time must do blister copper fair. 2.

The practice with common copper: Single out should make the range with general copper, the face that should fill completely, or the range that extends this to delay, all brims that make sure copper is fair are more than the margin that should make not to hurt the range that reachs other product at the same time, the planar horn that the Qing Dynasty with needless take out is less than (intersect with planar horn be in is deeper glue) , fill regular form; Find out copper public the biggest appearance, with one border next umbriferous to ask an area; Decide fiducial casing size, cut off ask an area, come here cupreous official figure is finished basically; Get the materials ready: Long * wide * is tall, grow to be fiducial casing with wide ≥Ymax and Xmax the length that actual copper expects is wide must be more than a graph to go up fiducial casing. The academic measure with tall ≥ fair copper + fiducial frame is tall + the height that hold clip. 5, blueprint destiny problem: 1, falling without off-the-peg treatment face, in cent of planar all sides, the center is right origin, end face is right 0, when end face is rough (copper is fair and character) stay 0.

The surplus of 1, when touching number namely, be opposite actually 0 (Z) , the on the low side on the graph 0.

1. 2, when should having off-the-peg treatment side, make pursue those who go up is off-the-peg face 0(z) , plane can be divided in cent in, touch number with off-the-peg edge otherwise (unilateral) treatment face wants school nucleus actual height, wide, long with blueprint difference, come by real stuff process designing. General situation, the dimension rework that machines a graph to go up first the appearance on the graph. 3, when should wanting many treatment, the first (standard) , be about an other a few fiducial gong is good, long wide want gong high, all machine the next time fiducial the side with want good with already was being machined last is accurate. 4, the fixed position of mold insert: Put inside whole, below fill up certain height next blueprint is elevatory also this height, plane is divided by whole in, height is pressed chain with Luo silk below the graph; It is square Founder in can be being divided continuously; In cent of rough usable the oldest shell; Cut one clamping apparatus, in be being divided by clamping apparatus, the relative position of mold insert graph and clamping apparatus puts blueprint origin in clamping apparatus center next certainly. 6, open wide cutter track selection: 1, the choice of the choice that key of curved surface chamfer is limits and face. The area that cutter track machines is: Stop an aspect with what choosing the place inside limits to choose a face to be, all places that can leave to go to nadir cutting tool from apogee are a principle. Place choosing face had better be all face, border can be the section that wants treatment only, the place that do not have a face is outspread the distance that is less than half knife diameter, because other face stays,enough surplus is protected automatically so; Line of best and outspread lowest, because lowermost place has gong of a R,do not arrive. The choice of the knife: Like cutting tool cannot when helix or diagonal feed or the area that machined the area that be less than not to receive a knife is sealed case, stay wait for 2 times thick. Before smooth knife, must did not open wide area entirely thick, especially small part, include 2 dimension part among them, three-dimensional horn reachs an area that rise, can break a knife otherwise. Leave 2 times thick: Choose limits with three-dimensional chamfer commonly, make the same score bottom knife, can use planar chamfer and appearance cutter track use. In do not hurt center of the cutting tool below the situation that reachs other range to choose border to place, general not essence of life decorates border, inspect a condition with fast and two-way angle and decide, helix feed, angle 1.

5 degrees, tall 1, it is a form when chamfer appearance, cannot the knife below helix uses diagonal feed, open commonly filter, especially curved surface leaves thick, feed is planar cannot low, lest bump into a knife, safe height cannot low. 1, retreat a knife: Need not retreat a knife relatively commonly, with retreat a knife absolutely, use when doing not have islands retreat a knife relatively. 2, planar chamfer: Mill all sorts of plane, sunken smooth chamfer, open type plane when mill part when, need to decide border, principle can feed (be more than diameter of a knife) , open office slants outside be more than half knife diameter, close periphery. 3, appearance: When place choosing plane suits an appearance statified, use an external form statified carry a sword (planar appearance) , the dot that carry a sword is with dot leaving a sword when, do not need plane of the Z that carry a sword to carry a sword commonly, as far as possible need not opposite height; Make good omissions direction is general right make good omissions (suitable knife) . 4, the cutter track setting that machinery makes good omissions: Filling positive sign is 21, change computer to make good omissions machinery makes good omissions, feed is perpendicular feed, the place that the knife cannot cross changes big R not to leave surplus. 5, wait for tall appearance: Agree with the side that goes enclosed, the side that takes open form if 4 should seal a face, if 4 inside or be not 4 rounds should choose limits and height (certain arc feed leaves thick) , use at opening thick case: The treatment distance inside either plane is less than diameter of a knife, if be more than diameter of a knife,should use bigger knife or two inferior tall appearances. 6, curved surface streamline: Have best uniformity and dry brittleness, suit smooth knife a lot of moment are desirable the tall appearance such as era. 7, radiative cutter track: Suit the intermediate case that has large hole (use less) . Note: Play a knife, the knife is not sharp, the knife is too long, should surround to cannot fluctuate when work is too deep; The face of the interest part both sides in workpiece should divide a cutter track, cannot go more, the brim when smooth knife had better be lengthened (with knife of curve advance and retreat) . 7, clear part: 1, of the clear part Qing Dynasty here is 2 dimension blind angle, be in front working procedure the part that have not takes, the place that wants like smooth knife criterion Ying Xianqing horn is again smooth knife, too small big dark corner can divide a Dao Qing, do not use penknife Qing Dynasty too much place. 2, clear three-dimensional part: Open a few small slot, a few three-dimensional corner are in. 3, break a knife easily, must consider to resemble too fine knife, long, treatment amount is too large (basically be Z to, deepness direction) circumstance. 4, cutter track: Go with 2 dimension appearance, can clear small part (R0.

8) reach part of 2 dimension plane; With parallel cutter track; With wait for tall appearance; The dead space that the curved surface that knives of a kind of place cannot go and appearance do not take should be sealed first rise a knife, clear finally part, the little gap in bedding face is sealed first commonly rise. 8, in smooth: 1, in smooth: Regard the steel of curved surface as makings and fine fair Cai Zhongguang. 2, principle: Bolo leaves thick when the surplus between layer and layer is more, it is a working procedure that makes better result gets when smooth knife, 3, characteristic: Keep clear of quickly, bolo flying Dao Yike, big feed, big span; Need not scruple exterior quality; Planar workpiece need not in smooth; The workpiece that waits for tall appearance need not in smooth, wait for tall appearance to leave thick when but a bit finer put two process together, a bit finer the distance that points to exterior surplus and layer and layer; Need the light in needing, still have the stuff that a main factor is the job, data is harder, the light in considering; Direction and smooth knife are machined solely to leave in thick had better meet relative to the thing that machines so the effect is good, even. 9, smooth knife: Smooth knife is to should achieve the assembly of all sorts of products and mould to ask to want so very discreet, give different cutter track setting and parameter setting according to diverse demand. 1, the height leaving a sword of smooth knife and final height instead 0, tolerancepublic errand designs less than of a silk, do not need to filter (work is less common difference is less, tolerancepublic errand affects exterior) . 2, before model and cent face should be achieved best bright and clean degree, hind model but second, other blame cooperates to reach avoid room but rough spot. 3, cutter track design decides by the following element: Particular external form (be like plane and other face) , abrupt face and flat curved surface. Between two sides whether interest part (interest part is apart) . Whether do two parts ask to differ (otherwise should leave surplus, how many of surplus, bright and clean spent demand is diverse) . Problem of mask of smooth knife middleman and guarantor is a big question, good to already was being machined side must arrive beforehand the error protection in treatment rises, by the requirement that protects an area protection rises. Limits protection, not plan the 0 protection of the error, high limits and flat limits; Protect protection. The extension of cutter track problem, in smooth knife, knife of circular arc advance and retreat had better be made extend the range slightly beforehand otherwise when cutter track machines the brim. Smooth knife raises knife question mediumly. Between take time of the billow that carry a sword, avoid to carry a sword as far as possible so. Method 1: Set the space that carry a sword (little gap) method 2: Cover, seal the point that carry a sword rise (little gap) method 3: Escape clearance (big gap is in) method 4: The feed issue in same height smooth knife is extended when waiting for tall appearance, feed of the first knife must from enter outside workpiece, avoid vibration to reach the workpiece that touch an injury, all smooth knives set feed certainly. Of cutting tool wear away problem: Become when work is greater, need to be over Dao Guang more same work. CNC Milling CNC Machining