The spring back of pre-test ThinkDesign compensates a function

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  • source:NODIE CNC Machining
Because quantify the requirement of the design gently to the car to rise ceaselessly, plate of high strenth steel expects the proportion that holds car automobile body is larger and larger. High strenth steel can be in the car is small below quantified premise, satisfy collision intensity requirement, the value of spring back of spare parts of high strenth steel that gives with production of general punch method however will be very great, the spare parts appearance after spring back often is not inside error limit control, cannot suit the application that needs actually. This makes spring back of automobile body spare parts increasingly outstanding to the influence of automobile body character. The spring back in board makings figuration is it is be caused by of character of metallic stuff itself, it is inevitable. One of the way to deal with a situation that in producing practice, take are to use method of spring back compensatory, the compensation that makes spring back on punch mould will compensate the spring back of the generation in board makings figuration. After the size of compensation basically shapes according to actual part detect data; Spring back of calculative of software of OK also and referenced numeric simulation is numeric; Perhaps give out by experience. After the spare parts shapes detect data can be obtained by a variety of methods, can combine manual measurement technique with check recognizance normally, can combine check to have measurement technique with 3 coordinate, recognizance of usable also check adds up to Bai Guang to measure take a picture namely measurement technique. 3 coordinate test point reachs the share its measure what numeric article basically involves is a basis after afore-mentioned actual parts shape detect data, compensatory of combinative spring back carries out experience, the GSM that uses ThinkDesign software (Global Shape Modeling) the function will become means of compensatory of modular face spring back. The GSM function of ThinkDesign is very much, use in spring back to compensate a respect we feel among them two functions are enough. It is " advanced (M) " function, the primitive curved surface of the spare parts before spring back of this function basis is out of shape, and a series of reference point lines that describe spring back to compensate a value; Still need a certain number of dot lines that match. Need to part only when using this command operation afore-mentioned design element and relevant tie order option can generate pitch on of high quality be out of shape curved surface. Of course a series of this pilot spot lines and the dot route that match are certain, need has the engineer of relevant experience. Lift a specification. Strengthen below column of some car A board, figuration of spare parts punch is delayed via pulling, cut edge punched hole, flange plastics 3 working procedure shape, use material is B340/590DP of excel in board, makings is thick 1.

2mm. Early days of this spare parts did not do spring back compensation, the classics after strike out form detects dimension error is bigger spring back warp is serious, measure by the following Bai Guangzhao visible, its are the biggest dimension deviation amounts to 10mm. The method of spring back compensation of the spare parts is, make as contrary as what measure the correspondence of one by one of spring back data that go out model range according to measuring data to press certain proportion on plastic model. Of the GSM in ThinkDesign software " advanced (M) " function, can use a series of this control that choose a route fitly, one-time generate a high grade spring back to amend modular area, make we can achieve afore-mentioned goals more easily, what want finished job. If use the word that traditional CAD software goes to doing,can imagine, it is a very trival job. This spare parts applies " advanced (M) " a series of control line of the function and curved surface are out of shape the sectional line of around contrasts. Apply twice " advanced (M) " spring back compensatory modular face: It is global compensation for the first time, it is local compensation the 2nd. In actual production this spare parts passes spring back compensation twice, percent of pass comes from or so litres 20% adjacent 90% . Another be " crest line is turned round (S) " function, the part before this function needs to a spring back is out of shape is original curved surface, and on this spare parts one reverse crest line continuously. Can be in after executive command turn round crest line to go up to arise automatically a series of perpendicular and sectional, and each sectional angle can be defined freely. Mere a command can want place to be out of shape curved surface is generated, efficiency is very tall. Here can lift a specification to use this function to make example of spring back compensatory additionally. The spring back that this exemple wants the appearance part of green of the spare parts in the graph to delay crest line appearance to do 3 ° upcountry according to experience amends part. The engineer that has CAD modelling common sense can see very easily, normally it is impossible to finish that CAD software handles an order with, lane is bad to should spend time of 9 days. And application " crest line is turned round (S) " function, a command can be done calm. Through above two we can see, the spring back that applies the GSM function of ThinkDesign to do stamping workpiece compensates correspondence at normally general CAD software is a very good complement. The GSM function can yet be regarded as that can say ThinkDesign one kind efficient, accurate, do stamping workpiece spring back ideally to compensate edge tool. CNC Milling