Graph 1 the must form freely when rough machining of balanced turbine lamina stress in pull current Cheng is machined in turbine lamina in machining manufacturing industry to produce flow, often need to change cutting tool, the device of automation workpiece clamp that when undertaking to turbine lamina mill is machined, uses also belongs to category of this kind of technology. This automation workpiece intensifies device containing portable centering top, clamping apparatus of for private use of detachable after workpiece undertakes rough machining unship. Make turbine blade for treatment, long-term since, alstom company (be located in Swiss Birr) great majority circumstance is to purchase nice forging stock. Accordingly, need to configure corresponding forging die according to the different type of forging stock and structural dimension every time. This company covers an area of 40000m2, main product is to be used at installed capacity most greatly of the gas turbine of the power plant of 2000MW(1MW=1000kW) , steam turbine and turbogenerator inside the rotor that fit pattern. As a result of workpiece be out of shape the product is increasing, hold the cost that changes a basis in the palm to be increased continuously accordingly. Below a lot of circumstances, this kind of position that increases cost makes machine manufacturing industry to cannot bear almost. After rough machining detachable clamping apparatus of next for private use develop machine tool, control equipment and cutting tool field in development, the requirement that professional personage raises is, want to consider the production method with low cost. Accordingly, the method that needs to use pair of thick blank undertake integral type mill is machined in the future makes turbine blade. Use this kind of treatment to produce a method very applicable, already obtained the result that raises yield in practice. In fact, the problem that appears in process of turbine lamina production is very few, more is when undertaking rough machining to forginging structural member, the main problem that appears below the stress that forms freely. Such, people found out a solution, made unship can tear open clamping apparatus of for private use to come afresh after rough machining in workpiece namely. Graph 2 when balanced clamp chuck, workpiece is advanced through clamp tip. And workpiece external diameter must incorrect tip is symmetrical, this deviation value must come through splint balanced measure of this one operation is in actual production also encountered a problem, it is turbine lamina on one hand not thin, stable, must acute clamp; It is on the other hand, the development trend of structural member is more and more similar, but not be changeless. Making the stress that makes work can stand to be formed freely must notice when rough machining to structural member, ensure stay in subsequently finish machining have enough mental allowance. Appeared so such challenge, develop a chuck namely, use this chuck to balance turbine lamina ground clamp to be between centering tip above all, and centering center is opened inside short after undertaking machining time, workpiece can be moved the position of a stress-free, centering tip can realize axial displacement from central position. Centering tip displacement comes after a new position, must be stopped by the lock afresh, later new clamp workpiece. Be out of shape by the clamp chuck of research and development of Swiss Forkardt company product and standard type chuck have a lot of different place, this kind is out of shape chuck will release the stress that arises by oneself, can be in aleatoric direction and work are the greatest the distance that maintains 2mm, and balanced before clamp chuck is to pass clamp tip to be advanced compulsively. With use photograph of centering tip solution to compare, chuck of this kind of clamp is out of shape the position of workpiece Zhang Jin of device is not mandatory symmetrical, the splint gift that must pass clamp chuck however realizes balanced semmetry, so, this clamp chuck is out of shape the plywood of device has the balanced capacity of 8mm of a ± . Centering tip allows to undertake the radial deflection of 3mm to aleatoric direction by central position, this device has a special function, can make centering tip returns central position afresh. Graph every plywood of 3 clamp chuck all is controlled by handle, the distance of top shift is 70mm, the geometrical dimension that right now stress optimizes lamina of turbine of pull current Cheng for 5000N is fixed normally, forginging one is formed in pull current Cheng very big allow common difference. So, every plywood of clamp chuck must undertake controlling adjustment through handle. Centering tip but axial shift 70mm, the tensile force of clamp chuck is 50kN. Compositive change store press fitting buy can ensure clamp chuck maintains tensile force, in order to make sure when hydraulic pressure system is divulged clamp chuck won't be opened accidentally. Clamp chuck is fluid pressure type, have a HSK (high speed is wired) interface, this interface contains the coupler with each flat conduit. Such solution but on the Zhang Jin dot that a certain number of work Zhang Jin is processing machine tool a side, treatment can send the machine tool later. Graph 4 clamp chuck but Zhang Jin is long for 800~2000mm, what although be used before Alstom company,the biggest diameter is the turbine lamina of 120mm is more agile integral type turbine blade cutting method, but in what use Forkardt company research and development finished cost also had chuck hind to drop apparently, and, after using chuck device, can assure the treatment quality of workpiece effectively, antrum of machine tool job is increased, treatment flow is more safe also. In addition, plan of clamp of workpiece of this kind of proprietary is the requirement that can satisfy treatment company to answer special challenge, can enhance the competition ability of the enterprise. With the work that uses a convention plan photograph compares Zhang Jin, this kind of new-style workpiece clamp technology can optimize pull current Cheng greatly, make treatment is produced more have autonomy. CNC MillingCNC Machining