Cumulative error vibration and high-speed presses Punch Discussion

Vibration punch, punch cumulative error is caused by a decrease in quality stampings most fundamental factor, and reduce vibration, reduce the most critical factor is to optimize the structural improvements cumulative errors punch. To enhance the precision punching processing precision, SAMHOOR precision punching of the lower die were optimized and improved, lower die improved from the floor, transfer mold base, mold seat adjustment device, of which the mold base plate and adjust the tone by the divided four corners of the mold base and the base plate connection between the guide means, the guide means comprises a guide post and plain bearings, guide post fixedly connected with the base plate, sliding bearings and adjusting die holder fixedly connected with the slide bearing guide posts connected. When the transfer mold base and relative movement up and down the floor, column-oriented guide to ensure that the transfer mode to adjust the seat height accuracy and stability, improve the machining accuracy of the workpiece.

Lower die holder die holder by the adjusting mechanism gearbox, four large sprocket, a first small sprocket, the idler wheel, the hydraulic motor, and a second small sprocket four pistons, of which a first small sprocket and hydraulic motor connector, four large sprocket and a second sprocket connected through a chain of small small sprocket to the first, second small sprocket fixedly connected with the gearbox, die height indicator fixedly connected with the gearbox. Tension wheel disposed between the first small sprocket and the large sprocket connected to the first small and large sprocket through the chain sprocket, respectively. Tensioning wheel chain tension adjustment. Four piston respectively connected to the upper end of the piston and the bottom piston is fixedly connected with the piston chamber activities, namely the transfer mode base is provided with four piston chamber, four pistons are arranged in the internal cavity of the piston, the piston is provided with an internal circuit, upper passage communicating with the piston chamber, the lower end of the oil passage is connected by connecting passage with passage control system is provided on the bottom plate of the junction connecting passage between the piston and the piston chamber and the oil on the piston and on the floor are It is provided with a sealing means. Block transfer mode and four piston form four sealed oil chamber, oil chamber when this work has played a threaded locking punch and punch pressure bearing two functions, when the pressure exceeds a set value punch, hydraulic pressure oil chamber relief in order to protect each punch components.

Inside the four guide means is provided with four sets of large sprocket, four large sprocket are arranged around the four piston, four large sprocket connected by four die holder adjusting means and adjusting activities. Adjusting means comprises a threaded sleeve and nut seat adjustment, seat and adjusting nut die holder bolted together, adjust one end of the threaded sleeve with the large sprocket bolted together. Large sprocket drive sets the rotation adjustment screw is rotated, the adjusting nut threaded sleeve relative adjusted up or down on the piston stop, in order to achieve the overall height variation mold adjusting mechanism.

The improved precision punching adjust the movable mold height adjustment crank length, relying on the dynamic model of stroke adjustment to adjust the mold height adjustment of the lower die to adopt, namely to achieve a high degree of mold base. Disposed between the transfer mold base and chassis guide post, guide post and base plate fixing, plain bearings and adjust the fixed die holder, transfer mold base and into the relative movement up and down the floor, guided by the guide posts. Set of four sealed oil chamber formed between the transfer mold base with four-piston, the oil chamber when the punch work serves two purposes punch thread lock and load pressure, when the punch force exceeds a set value, the oil chamber hydraulic pressure relief mechanism to protect the components. When you need to adjust the mold installation height of the oil chamber of oil pressure relief conducted, then rotate the hydraulic motor to drive the first small sprocket, chain driven by a first ferry four large sprocket and the second small chain wheel rotation, by adjusting the tension of the chain tension wheel to be adjusted, the second small sprocket transmits motion through a gearbox to die height indicator to show the mold installation height. Adjust the threaded sleeve with the large sprocket bolted, screwed with the nut seat, seat and adjusting nut die holder bolted, large sprocket to rotate the adjusting screw drive sleeve rotates, the adjusting nut threaded sleeve seat adjusted up or down relative on the piston stop, change the transfer mode in order to achieve the overall height of the body.