| CPC G01N 3/20 (2013.01) [G01N 3/066 (2013.01); G01N 33/20 (2013.01)] | 9 Claims |
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1. A fatigue bending and folding test device for an ultra-thin metal strip, the device comprising:
a first driver module;
a first folding module;
a first diameter adjustment module;
an expansion module; and
a frame;
wherein:
the first driver module, the first folding module, the first diameter adjustment module, and the expansion module are all disposed on the frame;
the first driver module comprises a servo motor, a coupler, and a drive gearbox; the drive gearbox comprises a driving gear shaft, a driven gear shaft, a plurality of output end covers, and a plurality of bearings; the drive gearbox is a hollow cubic structure comprising four sidewalls with holes, and the driving gear shaft and the driven gear shaft are respectively disposed through the holes; the bearings are respectively disposed in the holes, and the plurality of output end covers are respectively disposed outside the holes; the bearings are configured to reduce friction between the drive/driven gear shaft and the drive gearbox, and the output end covers are fixedly connected to the bearings, respectively; the driving gear shaft is one in number and long, and the driven gear shaft is two in number and short; two ends of the driving gear shaft pass through two holes of the drive gearbox, respectively; two short driven gear shafts are vertically arranged on both sides of the driving gear shaft and pass through other two holes of the drive gearbox, respectively; the servo motor is in transmission connection to one end of the driving gear shaft of the drive gearbox through the coupler; the coupler is connected to the driving gear shaft, and the driving gear shaft and the coupler rotate together through keys and keyways, reducing relative sliding; the driving gear shaft is equipped with a driving bevel gear, and the driven gear shaft is equipped with a driven bevel gear; the driven gear shaft is driven by the driving gear shaft through gear meshing of the driving bevel gear and the driven bevel gear;
the first folding module comprises an upper folding member, a lower folding member, and a first mounting base; both the upper folding member and the lower folding member comprise a first crossbeam, a longitudinal arm, a first fixing ring, a connecting ring, a first clamping member, a first adjusting ring, a fixed pressure cover, and a first flange type self-lubricating bearing; the longitudinal arm is four in number and four longitudinal arms are perpendicularly disposed on a bottom end of the first crossbeam; the four longitudinal arms comprises a first outer arm, a first inner arm, a second inner arm, and a second outer arm in turn from one end to another end of the first crossbeam; the first fixing ring is fixedly disposed on lower ends of the first outer arm and the second outer arm of the upper folding member; the connecting ring is disposed on a lower end of the first inner arm on the upper folding member; the first fixing ring is fixedly disposed on lower ends of the first outer arm and the second outer arm of the lower folding member; the connecting ring is disposed on a lower end of the first inner arm of the lower folding member;
the first crossbeam of the lower folding member is wider than the first crossbeam of the upper folding member, so that two first fixing rings of the lower folding member are disposed outside two first fixing rings of the upper folding member; the two first fixing rings of the upper folding member and the two first fixing rings of the lower folding member overlap with each other through the rotation of the lower folding member, and the first flange type self-lubricating bearing is attached to an inner side of each of the two first fixing rings of the upper folding member; a threaded hole is disposed on an inner side of each of the two first fixing rings of the upper folding member, and the first flange type self-lubricating bearing is fixed in the threaded hole by screws;
a first side of the connecting ring of the upper folding member and the lower folding member, facing the second inner arm, comprises a square hole to receive the driven gear shaft, thereby limiting a radial rotation of the upper folding member and the lower folding member, so that the upper folding member and the lower folding member is only rotatable with one of the two driven gear shafts; the driven output shafts rotate to fold the upper folding member and lower folding member inward; the fixed pressure cover is disposed on a second side of the connecting ring of the upper folding member and the lower folding member; the fixed pressure cover, the driven output shaft, and the connecting ring are fixed together through fixing screws thus preventing an axial movement of the upper folding member and the lower folding member; the first mounting base comprises two first fixing shafts which are mutually symmetrical, and the two first fixing shafts extends outside the first fixing ring for installing folding members;
inner sides of the first outer arm and the first inner arm and inner sides of the second outer arm and the second inner arm of the upper folding member and the lower folding member are all provided with clamping grooves and L-shaped sliding grooves; a row of fixed threaded holes are disposed on back sides of the first outer arm, the first inner arm, the second outer arm, and the second inner arm, and the back sides are adjacent to the inner sides;
the first clamping member comprises a sliding block, a lower clamping plate, an upper clamping plate, a rotating shaft, an intermediate pressure plate, and a plurality of fixing bolts;
upper parts of the upper clamping plate and the lower clamping plate comprise a plurality of threaded holes for fixed connection of the upper clamping plate and the lower clamping plate; a lower part of the upper clamping plate and a middle part of the lower clamping plate comprise a shaft groove for receiving the rotating shaft; a lower part of the lower clamping plate comprises a plurality of threaded holes, and a bottom part of the lower clamping plate comprises a rectangular opening; the intermediate pressure plate and an ultra-thin metal strip are disposed through the rectangular opening;
two ends of the rotating shaft comprise umbrella-shaped protrusions, and an inner side of the sliding block comprises an umbrella-shaped groove configured to cooperate with the umbrella-shaped protrusions at two ends of the rotating shaft to enable the rotating shaft to rotate in the sliding block; an outer side of the sliding block comprises a bulge that matches the L-shaped sliding grooves, so that the sliding block is flexibly clamped inside the L-shaped sliding grooves; the first clamping member is adjustable up and down between the first outer arm and the first inner arm, and between the second inner arm and the second outer arm according to a size requirement of the ultra-thin metal strip to be tested; sliding blocks on both sides of the first clamping member are fixed by tightening screws, thereby fixing the first clamping member; the first adjusting ring has a cross-section in the shape of an “Ω”, and two ends of the first adjusting ring are respectively disposed in the clamping grooves; the first adjusting ring is adjusted according to requirements and a folding diameter of the ultra-thin metal strip to be tested;
the first diameter adjustment module comprises an adjustment plate, a folding bar, and a support base; the adjustment plate comprises two cross-shaped plates, a connecting rod, and a second fixing shaft; the connecting rod is fixedly disposed on inner centers of the two cross-shaped plates, and the second fixing shaft is fixedly disposed on outer centers of the two cross-shaped plates; the connecting rod and the second fixing shaft are coaxial; an inner side of each of four top ends of each of the two cross-shaped plates comprises a chute for receiving the folding bar; a limiting plate is movably disposed in the chute to fix the folding bar on a corresponding top end of each of the two cross-shaped plates; the second fixing shaft comprises two locking through holes perpendicular to each other to form a “+” shape, corresponding to the four top ends of each of the cross-shaped plates; the folding bar are four in number with different diameters, and comprises a first folding bar, a second folding bar, a third folding bar, and a fourth folding bar;
the support base comprises a U-shaped base and two end covers; two top ends of the U-shaped base comprises two first mounting grooves, respectively, and the second fixing shaft is disposed in the two first mounting grooves; a lower part of each of the two end covers comprises a second mounting grooves, and two second mounting grooves correspond to the two first mounting grooves, respectively; a top part of each of the two end covers comprises two tap holes and a locking pin hole with the same diameter as the locking through holes for receiving a locking pin; the two end covers are fixed on the U-shaped base through tightening screws; the locking pin passes through the locking pin hole and enters one of the locking through holes of the second fixing shaft to prevent a radial rotation of the adjustment plate;
the expansion module comprises a second driver module without a servo motor, a second folding module, a second diameter adjustment module, a first expansion member and a second expansion member; the second driver module without a servo motor is in transmission connection to another end of the driving gear shaft of the drive gearbox through the coupler, so that a power of the expansion module is output forward; the first expansion member and the second expansion member each comprise an upper expansion part and a lower expansion part; the upper expansion part and the lower expansion part each comprise a second crossbeam, a third outer arm, a fourth outer arm, and a second fixing ring; the second fixing ring is fixedly disposed on lower ends of the third outer arm and the fourth outer arm; the second crossbeam of the lower expansion part is wider than the second crossbeam of the upper expansion part, so that two second fixing rings of the lower expansion part are disposed outside two second fixing rings of the upper expansion part; the two second fixing rings of the upper expansion part and the two second fixing rings of the lower expansion part overlap with each other, and a second flange type self-lubricating bearing is attached to an inner side of the two second fixing rings of the third outer arm and the fourth outer arm of the upper expansion part; a threaded hole is disposed on an inner side of each of the two second fixing rings of the upper expansion part, and the second flange type self-lubricating bearing is fixed in the threaded hole by screws; a second mounting base is disposed on an outer side of each of the two second fixing rings to fix the first expansion member and the second expansion member; the expansion module further comprises a second clamping member and a second adjusting ring which are disposed the same as that in the first folding module; the first expansion member and the second expansion member are respectively disposed on two sides of the first folding module, and are respectively fixed on corresponding second mounting bases; the upper expansion part is connected to the upper folding member through a first connection plate, and the lower expansion part is connected to the lower folding member through a second connection plate, so that the upper expansion part and the upper folding member of the first folding module rotate coaxially, and the lower expansion part and the lower folding member of the first folding module rotate coaxially, thereby achieving expansion and extension of the first folding module in two directions;
the first diameter adjustment module is disposed behind the first folding module, and an axis of the folding bar of the first folding module is coaxial to an axis of the first flange type self-lubricating bearing in the first fixing ring of the first folding module; the first diameter adjustment module is disposed between the first outer arm and the first inner arm, between the second inner arm and the second outer arm of the first folding module, and between the third outer arm and the fourth outer arm of the first expansion member and the second expansion member of the expansion module.
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