When the motor speed is the same, the transmission speed of the trapezoidal screw is proportional to the lead, the faster the transmission speed of the screw; the transmission speed of the screw is also proportional to the rotation speed.
Formula:
The calculation and derivation of the three elements of the helix can be explained by the right-angled triangle formed by the expansion of the helix: (1) Lead S: the distance that the helix moves around the cylinder once and moves along the axis of the cylinder, That is, the BC side of the triangle; (2) the helix angle w: the angle between the tangential direction of the helix and the axis of the cylinder, the helix angle in: helix in: in the triangle, the angle of helix rises between the cylinder and the end face of the helix The angle between them is in the triangle.
Ladder screw structure design.
This design uses a polished rod to drive the screw rod to rotate in the nut, a spring chuck is installed on the left end of the screw rod, and the workpiece is rotated to the left to feed, and the polished rod and the screw rod are processed with hollow tubes (to reduce the waste of end materials). Due to the long overhang in the middle, an auxiliary bracket can be considered.
Clamp-on knurling knife device. The knurling knives of the two designs are installed in the same way, but the connection between the bracket and the machine tool is different. Machining a hole, milled grooves and through holes across the center line of the hole on the opposite side of the processing part: the width of the groove is the same as the width of the knurled shank, the depth of the shank is the same as the height of the shank, and the bottom edge of the groove is close to the hole. Narrow and thin groove, knurled knife handle with the same width, cut a small groove, make the knurled blade of the same width and the same height of the knife handle, and cut a narrow thin groove vertically at the bottom of the groove near the groove connection hole, and the knurled knife is exposed;
Grease stop knurled wheel jam, stuck case. Press the knurling knife with the quick-change cover plate, and use the screw with the plum blossom handle to press the flower handle tightly. After the round steel is knurled by the guide rail sleeve, it is milled at a high speed to realize the completion of two processes at one time. The guide sleeve is quenched and tempered with tool steel, and it is milled up to be parallel to the long end face of the bracket. The guide sleeve positions the pin holes, assembly screws and brackets to ensure that the opening is directly aligned with the centerline of the groove.