Lathe work hang (go up)

In obtaining minim to eat trigonometric function of profound magical effect to be machined in turning opportunely, often machine a few inside, outside the circle is in the workpiece of above of 2 class precision. As a result of heat in metal cutting, the attrition between workpiece and cutting tool causes cutting tool to wear away the repetition that reachs all directions tool carrier locates a variety of reasons such as precision, quality assures hard. Eat to solve accurate minim deep, we are in turning treatment, use the relationship of triangular subtense and bevel edge according to need, will fore-and-aft small tool carrier removes a point of view, what can achieve minim shift lathe tool accurately is transverse the aim that takes deep cost, when the province that save project, ensured product quality, improved work efficiency. General C620 lathe penknife wears scale to be worth every case is 0.

05mm, if want,obtain transverse have deep value for 0.

Through checking sine trigonometric function expresses when 005mm: Sin α ＝ 0.

005/0.

05 ＝ 0.

When ′ of 5º44 of ＝ of 1 α wants to move penknife wearing into 5º44 ′ only accordingly, on every mobile small tool carrier fore-and-aft quarter when sending dish of one case, can achieve lathe tool to have deep value on transverse direction for 0.

The minim of 005mm is mobile. 2. Retrorse turning technology applies 3 long-term production to carry out a proof to be in specific turning treatment, use cut reversely make a technology can achieve favorable result. Lift example to be as follows now: (Material of whorl of 1) retrorse cutting is martensite stainless steel in treatment pitch is 1.

25 reach 1.

Of 75mm inside, outside when whorl workpiece, because of pitch of lathe silk lever by workpiece pitch purify when, the numerical value of earning is an indivisible value. When if use,raising the means that removes a knife to adding up to nut handle to machine whorl, often produce chaos to buckle, bed of general general be open to traffic buckles dish of device without chaos again, and abstain a chaos to buckle dish comparative again take time, because this is when the whorl that machines this kind of pitch, constant. Adoption method is law of low speed suitable turning, because use high speed to carry,buckle have not enough time to retreat a knife, manufacturing efficiency is consequently low, easy in turning generation gnaws a knife, exterior surface roughness is differred again, wait for martensite stainless steel in treatment 1Crl3, 2 Crl3 especially when cutting of material division low speed, the phenomenon that gnaw a knife is more outstanding. The retrorse outfit knife that in machining practice creation comes out, invert cutting, way taking a knife is opposite " 3 instead " cutting method can obtain good cutting integrated effect, because this method can issue turning whorl in high speed, the athletic way of cutting tool is by left walk along a knife to quit work right, so the cutting tool when whorl of cutting of nonexistent high speed removes the disadvantage that does not come out, specific means is as follows: When the whorl outside the car, grind similar inside whorl lathe tool (graph 1) ; When the whorl inside the car, grind to turn over inward whorl lathe tool (graph 2) . Before turning machines a product first invert attrition piece main shaft is moved slightly a bit closer, invert in order to ensure the rotate speed when starting. To good whorl knife, add up to split nut, actuate is turning low speed takes undercut place, take whorl lathe tool next cut suitably in, can hit invert, right now lathe tool falls in high speed by left take a knife right, after counting a knife according to this method cutting, can machine the whorl with a good tall precision of exterior surface roughness to come. (2) turns over a car to roll those who spend a tradition to turning the scrap in arranging a car to roll beautiful process and extremely sundry Yi Jin is mixed into workpiece between knife rolling a flower, cause workpiece to suffer force to produce grain chaos to bind greatly too, decorative pattern is crushed or double image. If use lathe main shaft to make the same score,turn the new operation law that opposes a car to roll a flower, can prevent the malady of the generation in the operation that arrange a car effectively, get favorable integrated result. (Inside 3) retrorse turning, outside taper pipe thread machines all sorts of precision in turning the demand is not quite high, batch is little inside, outside when taper pipe thread, need not use profiling device, use retrorse cutting and the new operation method that hold a knife reversely directly, edge cutting edge keeps using a hand transverse Peng knife (it is when the taper pipe thread outside the car from left move right, transverse Peng knife masters Peng knife deepness very easily to small diameter by big diameter) the reason is Peng knife from time to tome beforehand the reason of pressure. The range that in turning processing technique this kind of new-style retrorse operation technology uses; More and more extensive, can apply neatly according to all sorts of different specific situations. 3. In holding course of action and tool innovation newly what get alveolus to be machined in turning, auger be less than 0.

When the aperture of 6mm, because broach diameter is small, tigidity is poor, cutting speed go up not to go again, and workpiece material is heat-resisting alloy and stainless steel, cutting fights muscularity, because this is when bore, if use the means of mechanical drive feed, broach breaks off extremely easily, a kind of simple and easy and effective tool and hand introduce to charge feed means below. Above all get collet to change formerly make type of Cheng Zhibing float, want to be bradawl head clamp on float getting collet only when the job can undertake bore smoothly. Because broach is hind,be straight handle slides cooperate, it is unplugging the swing in covering, when getting alveolus, handhold gently with handle gently get collet, can realize a hand to accuse minim feed, apace gets out alveolus, maintain the service life that maintain a volume character and prolongs bradawl head. Change after making multi-purpose get collet to still can use Yu Xiaozhi means inside aperture of whorl tap, bore with a reamer (if drill a bit larger hole, can unplugging set with pin of a spacing is inserted between straight handle can) see a picture 3. CNC Turning machining center 4. What deep Kong Jia is versed in is shock-proof in deep aperture treatment, because bore diameter is small, boring cutter arbor is long and thin, in turning aperture Φ 30 ～ 50mm, deepness controls deep aperture in 1000mm when generation of hard to avoid shakes, shake to prevent arbor, the most simple and easy and effective method is add on arbor body two stay (the material such as bakelite of the cloth that use clip) its size just in time and bore diameter size are consistent. The effect that sustains to fixed position has as a result of block of the glue that place cloth in cutting process, arbor shakes with respect to not easy generation, the deep aperture with can machine a quality good. 5. Little center gets prevent in turning treatment, auger be less than by Φ 1.

When the central aperture of 5mm, central getting breaks off extremely easily, simple and easy and effective defending a method is to getting central Kong Shi, do not want locking tailstock, those who let tailstock is self-prossessed will undertake drilling central hole with the attrition power that produces between face of machine tool bed, when cutting resistance is too great, tailstock can back down by oneself, protected central getting consequently. 6. "O " model the treatment craft of balata mould is machined in turning " O " model when balata mould, often produce shade model and force plug between the phenomenon of amlposition, those who press " O " model if balata cast shape pursues 4, create a large number of waste product. The course experiments for many times, application basically can be machined like lower part law give those who accord with technical requirement requirement " O " model the mould comes. (① of craft of treatment of 1) force plug presses graph fine vehicle departmental dimension and 45 ° cant. ② holds knife of good R figuration, move small tool carrier to 45 ° , if pursue,to knife method 5 are shown. Press graphic representation, r knife contacts a dot to be C in D of the circle outside contacting the knife when A position, by arrowhead the direction of 1 will procrastinate greatly board shift is apart from, press arrowhead again the direction of 2 moves transverse tool carrier X dimension, x presses type calculates: X=(D-d)/2+(R-Rsin45 ° ) =(D-d)/2+(R-0.

7071R)=(D-d)/2+0.

2929R(namely 2X=D, D+0. 2929 Φ ) . Press arrowhead next the directional shift of 3 procrastinates greatly board make R knife contacts 45 ° cant, right now cutting tool is on central position namely (namely R knife is in B position) . ③ presses arrowhead the directional shift penknife of 4 wears model antrum R, feed deepness is Φ / 2. Knife of the R that note ① is when B position: ∵ OC=R, OD=Rsin45 ° =0.

CD=OC-OD=R-0 of 7071R ∴ .

7071R=0.

2929R, ② X dimension can be controlled with slip gauge, r dimension controls deepness with dial gauge. (① of craft of treatment of 2) shade model presses a plan 6 requirements machine each place dimension (model antrum dimension does not machine) . ② grinds join 45 ° cant and end panel. ③ holds knife of good R figuration, move small tool carrier to 45 ° (move machine) of force plug giving nether world namely, by the graph 6 in R knife contacts the knife when A ′ position outside dot of round D(contact is C) , by arrowhead the directional shift of 1 procrastinates greatly board D of the circle outside making cutting tool leaves, press arrowhead again the direction of 2 is apart from X of shift of transverse tool carrier, x presses type calculates: X=d+(D-d)/2+CD=d+(D-d)/2+(R-0.

7071R)=d+(D-d)/2+0.

2929R (namely 2X=D+d+0.

2929 Φ ) press arrowhead next the direction of 3 will procrastinate greatly board move to contact 45 ° cant to R knife, right now cutting tool is on central position (pursue namely 6 in) of B ′ position. ④ presses arrowhead the directional shift penknife of 4 wears model antrum R, feed deepness is Φ / 2. Note: ① ∵ DC=R, OD=Rsin45 ° =0.

CD=0 of 7071R ∴ .

2929R, ② X dimension can use slip gauge control, r dimension controls deepness with dial gauge. CNC Milling CNC Machining