Numerical control turns the use of mould of tower punching machine and safeguard

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Current, the domain is machined in board gold punch, numerical control turns tower punching machine with its punch speed precision of fast, treatment versatility of tall, mould strong, product is agile the characteristic such as diversity, get applied extensively. Numerical control turns the pattern that place of tower punching machine uses, because its precision and quality demand are high, punch rate is rapid, choose domestic and international professional manufacturer to be like American MATE directly commonly (graph 1) , Beijing Zhao Wei, Guangzhou starts the product such as peaceful, its norms set is complete, versatility is strong, can satisfy the special requirement of the user well. Graph 1 user in the choose and buy some is planted after the mould of character, the level that its are used and maintains, affect the service life of the treatment quality of workpiece and mould directly. The mould also is the important segment that controls equipment to run cost. Accordingly, a few knowledge that learn and master this respect are applied actual in, cost-effective to carrying, reduce cost, main effect also arrives since the meeting. Later development discusses numerical control to turn the point of a few technologies that mould of tower punching machine should follow in use and be safeguarded, put forward corresponding settlement in the light of real problem method, the likelihood has favorable direct effect to the user. One, in making sure clearance of mould of first-rate mould clearance is to show drift enters lower mould, the clearance the sum of two side. It and board thick, material is qualitative and punch craft is concerned, choose suitable mould space, can assure good punching quality, reduce burr and cave in, maintain board makings level, prevent effectively to take makings, prolong mould life. Through examining the case of punch flotsam, can decide mould space is suitable. If gap is too big, flotsam can appear coarse those who rise and fall rupture face and lesser bright side. Gap is bigger, rupture the point of view that face and bright side form is older, the meeting when punching is formed an edge and rupture, appear even a slight edge is protuberant. Conversely, if space is too little, flotsam can appear small angle ruptures face and larger shining area. Should undertake groove, pace rushs, cut when waiting for local punch, side force will make drift deflexion and create unilateral gap too small, sometimes blade edge deflection crosses congress scratch lower mould, those who create fluctuation standard is fast wear away. Mould with optimal clearance punch when, of flotsam rupture face and shining mask have same point of view, mutual coincide, can make rush so reduce force the smallest, the burr of punching is very small also. The optimal clearance of the mould, consult please watch 1: 2, if workpiece appears,timely blade grinds the service life that can prolong a mould effectively cross big burr or unusual noise produces when punch, the likelihood is mould passivation. Check drift and lower mould, generation radius should wear away by the side of its blade about 0.

When the circular arc of 10mm, be about blade was ground. Practice makes clear, the blade that often has drop is ground and not be when blame grind cannot when again blade is ground, can maintain good workpiece quality not only, reduce strong reduce force, and can make mould life lengthens one times above. Besides know a pattern when blade is ground besides, master correct blade to grind a method especially important. Mould blade grinds regulations to be as follows: When 1) blade is ground, inside the V that holds drift upend clip chuck of magnetism of grinder of Yu Ping face chamfer or clamping apparatus, every time grinding quantity is 0.

03~0.

05mm, till drift is sharp,repeat grinding, quantity of the biggest grinding is commonly 0.

1~0.

3mm. 2) uses agglomeration alumina emery wheel, hardness D~J, grind bead size 46~60, had better choose the emery wheel that applies to high-speed steel grinding. 3) is close to emery wheel when grinding muscularity or mould when, add cooling fluid can prevent mould overheat and craze or anneal, answer to ask to choose cooling fluid of high grade multipurpose according to manufacturer. 4) emery wheel is down feed to measure 0.

03~0.

08 Mm, transverse feed 0.

13~0.

25 Mm, transverse feed rate 2.

5~3.

8m/min. After 5) blade is ground, with oilstone burnish point, purify burr, grind a radius 0.

03~0.

The round horn of 05 Mm, can burst apart in order to prevent point. 6) drift demagnetization is handled and the lube on gush, prevent to rust. Express the 2 common problems in listing blade grinds a process, cause of formation and processing technique: 3, eliminate and decrease as a result of,stick the method of makings the pressure when punch and quantity of heat, meeting general the petty grain felt of board makings surface of Yu Chong head, cause punching quality difference. Purify is stuck makings is usable fine oilstone burnish, the way that burnish direction should move with drift is same, the meeting after such light avoids to stick the generation of makings further. Do not wait for burnish with roving cloth, lest drift surface is rougher, appear more easily stick makings. Reasonable mould clearance, good punch technology, and necessary board makings is lubricant, can decrease stick the generation of makings. Prevent overheat, use lubricant means commonly, such meetings reduce attrition. If cannot lubricate or occurrence flotsam spring back, can adopt the following method: The drift that uses many same measure alternately by turns punch, can make its have longer cooling time before be repeated to use. Use overheat mould stop doing business. Through process designing control changes a pattern, interrupt its to duplicate the job for long, or reduce its punch frequency. 4, if be in,measure of board makings metabolic avoids when developing a lot of aperture a lot of aperture rush on Zhang Ban, accumulate plank as a result of what develop shear stress irretentive level off. Every time when punching, the material by the side of Kong Zhou can be out of shape downward, cause the surface on board makings to appear pull stress, and next surfaces appear press stress. To a few punching, its effect is not apparent, but when punching amount increases, pull, press stress someplace to accumulate, till material is out of shape. Eliminate this kind of metabolic a method is: First a Kong Chong cuts every other, return next strong cut the rest hole. Although also be met,produce stress so, but alleviated however in same way order the stress when punch is accumulated, also can make around the stress of two groups of aperture is mutual and quits, prevent board makings thereby be out of shape. 5, avoid to rush as far as possible had cut narrow a makings when cutting width to be less than the board makings of plate thickness with Yu Chong when the mould, can be out of shape because of side direction master piece is used and making drift bends, the clearance of your a side passes small or wear away aggravate, serious when meeting scratch lower mould, make fluctuation model damages at the same time. The proposal does not want a pace to be less than to width 2.

Of thickness of 5 times plate narrow slat makings. Had cut narrow when makings, board in expecting meeting tendency bends lower mould to start to talk, is not be cut off completely, meet even wedge the flank of die. If cannot prevent afore-mentioned situations, the proposal uses the completely oriented pattern that retreats makings board to have the effect that prop up to drift. 6, although heat treatment and exterior coating are ameliorable,the case hardening of drift reachs its suitable scope drift surface is characteristic, but not be to solve punch problem and the common method that prolong mould life. Popularly says, coating raised drift surface hardness to make lateral lubricity gets ameliorative, but when punch of material of big tonnage, horniness, these advantages disappeared after about 1000 punch. Be aimed at the following circumstance to be able to use the drift of case hardening: Develop soft or agglutinant material (like aluminium) ; Develop thin abrasiveness material (like vitreous annulus oxygen piece) ; Develop thin horniness material (like stainless steel) ; Frequent room for action is strong; Be not the circumstance that lubricates normally. Case hardening uses the method such as plating titanium, nitriding normally, layer of its case hardening is the molecular structure of M of ply 12~60 μ , it is drift matrix partially, and be not is coating only. The mould of case hardening can be pressed normally means blade is ground. Can reduce a mould to be in through case hardening strong stainless steel board when wear away, but can not prolong its service life, and proper and lubricant, seasonable blade is ground and wait by regulations operation, it is effective method however. 7, punching machine model the overhaul when pair of neutral are bad if punching machine model bad to neuter, create a pattern fast passivation, workpiece machines quality difference, can overhaul with respect to the following: Examine the horizontal case of the machine tool, when necessary readjust; Check the modular aperture on lubricant dial and oriented key, if have,injure seasonable rehabilitate; The lower mould of clean dial, so that lower mould is accurate,install, inspect the wear out condition of its key or keyway, change when necessary; Use mould of special core marvellous calibration to be versed in, if have deviation,adjust in time. Afore-mentioned content are right normally case, differ somewhat in view of the specific type norms of punching machine and mould, the user is united in wedlock to know and sum up experience actually even, play gives the optimal performance characteristics of the mould. CNC Milling CNC Machining