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The logical choice of clamping apparatus of tool of numerical control machine tool reachs use method introduction

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Dispatch of net of machine tool of Chinese numerical control: Current, machining can divide by production lot it is two kinds big: One kind is odd, much breed, small lot (abbreviation small lot is produced) ; Another kind is little breed, big batch (abbreviation big batch is produced) . Among them former the 70 ~ that hold machining total production value about 80% , it is the main body of machining. Same a machine tool, it why produce efficiency to differ however is good to why produce efficiency to differ however severalfold? The conclusion that reach is: The clamping apparatus that numerical control machine tool chooses is improper, make the manufacturing efficiency of numerical control machine tool is reduced considerably thereby. The reasonable option that clamping apparatus of numerical control machine tool introduces below reachs application. How to raise utilization rate of numerical control machine tool? Pass technical analysis, the use of clamping apparatus has very big concern. According to not complete count, machine tool of domestic company numerical control chooses the scale with unreasonable clamping apparatus to be as high as 50% above. To the end of 2010, machine tool of Chinese numerical control retains the quantity is close million stage, the numerical control machine tool that has 500 thousand above that is to say chooses as a result of clamping apparatus unreasonable or application is undeserved, and appeared " enforced idleness due to poor organization of work " phenomenon; Will tell from another angle, on the choice of clamping apparatus of numerical control machine tool and application there's something behind all this can be done, because among them accumulate contain the potential economic benefits with considerable . Small lot produces periodic ﹦ (preparation / await) handling time of time + work is produced as a result of small lot " work handling time " very short, accordingly " production (preparation / await) time " accident has the effect with crucial to machining cycle. Want to improve manufacturing efficiency, must think method shortens production (preparation / await) time. 1, below recommend 3 kinds of small lot to produce but the clamping apparatus of numerical control machine tool of first consideration: Built up fixture calls   of   of built up fixture again " clamping apparatus of building blocks type " , it standardizes design, function by a series of courses the composition of component of machine tool clamping apparatus with different measurement of each different, norms, the client can ask according to treatment, elephant " build building blocks " same, spell the machine tool clamping apparatus that puts on all sorts of types quickly. As a result of leave out of built up fixture design and time of production special fixture, shortened greatly production plans time, shortened effectively consequently small lot production is periodic, improved manufacturing efficiency namely. Additional, built up fixture still has fixed position precision clip of tall, outfit is flexible big, loop repeats use, make energy-saving section material, use cost cheap wait for an advantage. Reason small lot is machined, especially when product figure is relatively complex but first consideration uses built up fixture. Flat-nose pliers of combination of     nicety belongs to accurate combination flat-nose pliers actually in built up fixture " close " , rate of as stronger than its versatility as photograph of component of other built up fixture, standardization is higher, use handier, outfit clip is more reliable, because this received wide application inside global limits. Accurate combination flat-nose pliers has fast setup (disassemble) , the advantage such as fast outfit clip, because this can shorten,production plans time, raise small lot to manufacture efficiency. At present the commonly used accurate combination flat-nose pliers on international installs clip limits to be in commonly of 1000mm less than, clamping force is in commonly 5000Kgf less than. Those who need an attention is, the accurate combination flat-nose pliers that says here is not vintage opportunity adds vice, vintage opportunity adds vice function onefold, production precision is low, cannot become group use, service life is brief, unsuited use on numerical control machine tool, machining center. The accurate combination flat-nose pliers that says here is traceable Euramerican wait for industrial developed country, a series of new-style flat-nose pliers that are aimed at design of place of characteristic of numerical control machine tool, machining center technically, this kind of product has outfit mix flexible precision of big, fixed position tall, clamp is fast, can become group use wait for a characteristic, suit numerical control machine tool, machining center to use particularly. Clamping apparatus of permanent magnetism of electricity of   of   of clamping apparatus of electric permanent magnetism is with neodymium the new-style magnetically hard material such as Tie Peng is magnetic force source, a kind of when apply principle of contemporary magnetic circuit and design new-style clamping apparatus. Much chance machines practice to make clear, clamping apparatus of electric permanent magnetism can improve the comprehensive treatment efficiency of numerical control machine tool, machining center considerably. The clamp of clamping apparatus of electric permanent magnetism and loose process need 1 second left and right sides only, because this shortened considerably,hold clip time; The fixed position component of clamping apparatus of groovy machine tool and clamping unit take up the space is larger, and clamping apparatus of electric permanent magnetism takes up without these dimensional component, because this and photograph of clamping apparatus of groovy machine tool are compared, the range holding clip of clamping apparatus of electric permanent magnetism is bigger, this is helpful for making full use of the working of numerical control machine tool and treatment journey, be helpful for improving the comprehensive treatment efficiency of numerical control machine tool. The attraction of clamping apparatus of electric permanent magnetism is in commonly 15 ~ 18Kgf/cm2, because this must assure attraction (clamping force) force of enough and counteractive cutting, usually, adsorptive area should not be less than 30cm2, namely clamping force is not less than 450Kgf. 2, the big batch of clamping apparatus of numerical control machine tool that appropriate big batch machines machines periodic = to machine + of handling time of work of latency time + to produce preparative time " treatment latency time " basically include to workpiece outfit is placed and change the time of cutting tool. Clamping apparatus of traditional hand motive bed " workpiece outfit places time " the 10 ~ that can achieve large quantities of quantities to machine cycle 30% , such " workpiece holds clip " the decisive factor that became an influence to manufacture efficiency, also be machine tool clamping apparatus " dig go " key target. Appropriate of this big batch treatment uses reason fast fixed position, fast clamp (loose) special fixture, but first consideration is the following clamping apparatus of 3 kinds of machine tools: Hydraulic pressure / hydraulic pressure of   of   of pneumatic clamping apparatus / pneumatic clamping apparatus is regard motivation as the source with oil pressure or atmospheric pressure, the special fixture of the fixed position that will realize pair of workpiece through hydraulic pressure component or pneumatic component, bearing and impaction. Hydraulic pressure / OK and accurate apace decides pneumatic clamping apparatus the mutual position between workpiece and machine tool, cutting tool, the positional precision of workpiece is assured by clamping apparatus, treatment precision is tall; Fixed position and clamp procedure are quick, huge saved clamp and the time that release workpiece; Have a structure at the same time compact, but multitask outfit clip, can have high speed heavy cut, can achieve the advantage such as automation control. Hydraulic pressure / afore-mentioned advantages of pneumatic clamping apparatus, those who make is particularly appropriate in numerical control machine tool, machining center, flexible product line is used, suit large quantities of quantities to machine particularly. Multitask of the fast clamp that place of clamping apparatus of permanent magnetism of electricity of   of   of clamping apparatus of electric permanent magnetism has, easy implementation outfit clip, outfit is placed but clip of many treatment, outfit is smooth reliable, energy-saving environmental protection, can implement automation the advantage such as control. Compare with photograph of clamping apparatus of groovy machine tool, clamping apparatus of electric permanent magnetism can shorten considerably the time that hold clip, reduce the number that hold clip, improve the efficiency that hold clip, because this applies to small lot production not only, also apply to large quantities of quantities to produce. Base of clamping apparatus of smooth face of   of   of base of smooth face clamping apparatus is returned in domestic application is not very much, but in Euramerican wait for industry developed country application is very wide. It passes the semifinished product of essence of clamping apparatus matrix of finish machining namely actually, the fixed position of component and part of join of machine tool fixed position and spare parts on clamping apparatus face already finish machining ends. The user can need actually according to his, machine the special fixture that make by oneself. Base of smooth face clamping apparatus can shorten effectively the cycle of production special fixture, reduce production to plan time, consequently can from shorten on the whole large quantities of cycle that estimate production, improve manufacturing efficiency; Can reduce the production cost of special fixture at the same time. Because base of this smooth face clamping apparatus suits cycle particularly,closer big batch is produced. Reasonable use clamping apparatus, experience of   of   of mining equipment potential makes clear, machine efficiency to raise numerical control machine tool, mere " anthology right " clamping apparatus of numerical control machine tool is insufficient still, still must be in " had used " kongfu of fluctuation of clamping apparatus of numerical control machine tool. 3, below introduce 3 kinds of commonly used methods: Multitask multitask of law     the fundamental of the law: Place many workpiece through outfit, achieve shorten unit outfit places time, lengthen cutting tool to have the objective of effect cutting time. Multitask the clamping apparatus that clamping apparatus has place of clamp of many fixed position namely. Increase the need that manufactures efficiency as the development of numerical control machine tool and user, now multitask the application of clamping apparatus is increasing. In hydraulic pressure / the multitask in the structural design of clamping apparatus of pneumatic clamping apparatus, permanent magnetism of built up fixture, electricity and accurate combination flat-nose pliers the design is more and more general. Become   of group of use law   to put a few identical clamping apparatus in same job to use, can come true likewise " multitask " the end that holds clip. The clamping apparatus that place of this kind of method involves should be passed commonly " standardization design, high accuracy is made " , achieve the requirement that working procedure of numerical control machine tool machines hard otherwise. Can make full use of into group use method journey of numerical control machine tool, benefit at machine tool drive disk assembly balanced wear away; At the same time relevant clamping apparatus can be used independently, implementation holds clip many times, can use jointly again, realize big norms workpiece to hold clip. Local change law     quickly local changing a way quickly is what control machine tool clamping apparatus through logarithm is local (fixed position component, clamping unit, right knife component and guide component) undertake changing quickly, achieve function of rapid change clamping apparatus or the goal of use means. For example: Change assorted flat-nose pliers quickly, can the change that through changing quickly gate implements the function that hold clip, just expect by outfit clip change becomes the club that hold clip to expect for instance; OK also the change that through changing quickly clamping unit implements clamp means, move clamp change to become hydraulic pressure clamp by the hand for instance. Local changed a law quickly to shorten considerably change reach the time that adjusts clamping apparatus, in small lot production the advantage is relatively clear. (original title: Choose and use general knowledge of clamping apparatus of tool of numerical control machine tool) (origin: Metallic treatment is online) CNC Milling