Numerical control lathe, how is cutting tool actor chosen reach cutting dosage?

The diagnostic photograph of cutting tool of lathe of 1 numerical control relatively at cutting tool of general accuracy machine tool, cutting tool of numerical control lathe has the feature of the following respects: Have good precision and tigidity, fight brace up the effect is good, heat is out of shape small; has good interchangeability, can undertake; has more long life be changinged quickly, dimension of cutting tool of more stable; adjusts cutting sex relatively convenient, can shorten effectively a bit that the time; cutting tool that the place that change a knife uses can stabilize or the feature that break bits; to have standardization, seriation, can go to the lavatory cutting tool management and process designing. 1.

The choice principle science of cutting tool of lathe of 2 numerical control, reasonable cutting tool life is the fundamental sex principle that numerical control lathe has cutting tool actor is chosen, lathe tool life and cutting are put in very close connection between the quantity, before the cutting dosage with corresponding design, the life that ought to be aimed at cutting tool carries out logical choice, cutting tool life chooses criterion ought to the target that according to optimizes will undertake deciding. Contain life of lowermost cost cutting tool and life of highest productivity cutting tool normally, the target of lowest of cost of working procedure of former according to will undertake choosing, latter according to is odd the target with a least man-hour will undertake choosing. 1.

Actor of lathe of 3 numerical control chooses lathe of numerical control of cutting tool type type of commonly used cutting tool basically has lathe tool of circular arc form, shape lathe tool and sharp contrast lathe tool. Among them, shape lathe tool also can call example lathe tool, the dimension of its edge and appearance are deciding what to process the outline form of the spare parts directly. And between CNC Machining, ought to as far as possible little use shape lathe tool. Lathe tool of alleged top body, its basically are with straight a kind of cutting tool that cutting blade is main feature, respectively by linear appearance advocate, deputy cutting blade is formed. To the choice of parameter of gather of sharp contrast lathe tool, it and common turning are relatively similar, but ought to the trait that integrated numerical control achieves especially will carry out comprehensive analysis. The circularity of itself of lathe tool of circular arc form or line outline is spent very small, cutting blade is circular arc form, knife the dot is in the centre of a circle. Further consideration must want when undertaking radius of lathe tool circular arc chooses at 2 o'clock the circular arc radius of blade of cutting tool cutting, need is equal to or be less than the radius of the smallest curvature among outline of spare parts sunken form, ought to have prevented small situation at the same time, can bring about production difficulty to increase not only otherwise, heat energy still can come loose because of cutter hub in the meantime force is differred or intensity of point of a knife passes to cause lathe tool to be damaged infirmly. Be aimed at rough machining for, because surplus is larger, corresponding lathe tool chooses to need to assure to have enough strength, tigidity. Normally the circumstance falls, itself of integral cutting tool has good tigidity, however because the structure of its itself is opposite relatively multifarious, so machine clip cutting tool makes way of main research and development. In the light of cutting tool choice character, the treatment precision of itself of machine clip cutting tool and bit clip manage a construction very crucial, be aimed at thick car demand, ought to choose to hold the lathe tool that provides durable sex, strength concurrently, will satisfy thick car to fight each other with this feed and the demand that carry penetration of a cutting tool on the back to measure a respect greatly [2] . And be aimed at fine vehicle demand, ought to choose to hold the lathe tool that provides durable sex, precision concurrently. Dosage of cutting of lathe of 2, numerical control asks to efficiency extremely tall metal cutting machines a circumstance, tool of specific cutting dosage, cutting and be machined material is crucial, 3 person the character that chooses to matter to whole cutting to machine directly, time, and return immediate to the life generation of lathe tool impact. Want to ensure the economy of treatment and efficiency effectively, must want to undertake admitting effectively really in the light of cutting condition. Cutting dosage involves cutting speed, feed and amount of back penetration of a cutting tool respectively, these 3 element matter to the scathing circumstance of lathe tool directly. In the process of affirmatory cutting dosage, must want to be on the foundation that ensures the relevant demand such as cutting system intensity, tigidity, produce the manufacturing power of the machine tool further, will promote the cutting of lathe tool property with this. The choice of corresponding numerical value must want to abide by a machine tool given cutting parameter requirement, and want rotate speed of safeguard feed, main shaft and amount of back penetration of a cutting tool can undertake parameter changes accommodative effectively, will ensure the efficiency that whole cutting works and quality with this. Corresponding principle basically includes the following two respects: On one hand, in safeguard treatment socioeconomic premise falls, thick car promotes production efficiency; as far as possible on the other hand, half fine vehicle and fine vehicle need are below requirement of surface roughness of safeguard workpiece surface and the premise that treatment precision asks, effective give attention to two or morethings manufactures the efficiency of the respect. 2.

The choice that penetration of a cutting tool of back of quantity of 1 back penetration of a cutting tool measures needs the actual condition of the respect such as mature machine tool, cutting tool, clamping apparatus and workpiece. Below the premise that ensures machining complex stiffness, need chooses as far as possible least begin mental allowance to excise the job only to the frequency, assure manufacturing efficiency effectively thereby. When facing spare parts precision to ask relatively harsh treatment is produced, normally need shifts to an earlier date obligate 0.

2~0.

The surplus of unilateral fine vehicle of 5 Mm. 2.

Function of the cutting speed that rotate speed of 2 main shaft consults cutting tool allows integratedly, machine tool and be waited for by treatment hardware data, all sorts of data that consult concerned CNC Machining produces cutting dosage to concern at the same time, will design corresponding cutting rate with this. After cutting speed design is finished, then referenced workpiece diameter undertakes corresponding computation works, reach finally main shaft rotate speed. 2.

3 feed feed ought to consult integratedly surely really by the relevant condition such as treatment hardware data, precision and surface roughness, below the precondition that assures character of spare parts surface further, choose bigger feed as far as possible, make machine efficiency to be able to promote. Below rough machining circumstance, determine bigger cutting dosage normally, the amount of back penetration of a cutting tool with limited larger selection needs in the process of turning, will reduce the number of the knife with this, next, give bigger feed as far as possible, finally is the rate that promotes cutting as far as possible, the rate of cutting is higher, temperature of corresponding point of a knife also can rise quickly, cause heat to wear away thereby, mechanical wear and chemistry wear away, wear out condition can raise lathe negative charge badly not only, also can be opposite at the same time treatment character produces an effect. Every promote cutting speed 1/5, corresponding cutting tool life can reduce 1/2[3] . Function of if cutting tool and machine tool can satisfy corresponding requirement, ought to promote the rate of cutting as far as possible, below corresponding circumstance, can choose inferior feed, will promote a spare parts exterior quality with this. Below the circumstance of round face outside be elected as choose fine vehicle, feed can come true every turn 0.

1mm, below finish machining circumstance, corresponding mental allowance is lesser, bring about cutting deepness very small also, ask in the light of appearance precision for faster face, ought to differentiate for many times to come the surplus of purify correspondence, the appearance error part that will reduce remain with this [4] . Dosage of cutting of 3, epilogue is the crucial parameter that must want to undertake affirming among machining, the efficiency that the rationality of corresponding parameter produces to whole treatment, quality and cost produce cutting dosage to be affected directly. What scientific and reasonable cutting dosage points to is to make full use of performance of machine tool power (torque, power) with cutting function, below the precondition that ensures quality effectively, strive for the cutting dosage of low finished cost and tall productivity as far as possible. Meanwhile, the actor that still must want to take cutting cutting tool seriously highly picks the job. Much relevant research and production carry out further proof, the actor of cutting tool chooses the choice with cutting dosage to have very important real sense to machining production, it can promote working efficiency and quality effectively. Those who need an attention is, show level, data and technology are basic related a lot of cutting tool of CNC Turning undertake on the base that produces in common machining, apply to CNC Turning not completely to machine production, because this cutting dosage still needs more thorough research. CNC Milling CNC Machining