Tham khảo tài liệu 'mechanisms and mechanical devices sourcebook - sclater & chironis episode 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | __CHAPTER 6 SPRING BELLOW FLEXURE screw And BALL DEVICES FLAT SPRINGS IN MECHANISMS Constant force is approached because of the length of this U-spring. Don t align the studs or the spring will fall. A flat-wire sprag is straight until the knob is assembled thus tension helps the sprag to grip for one-way clutching. A spring-loaded slide will always return to its original position unless it is pushed until the spring kicks out. Increasing support area as the load increases on both upper and lower platens is provided by a circular spring. Easy positioning of the slide is possible when the handle pins move a grip spring out of contact with the anchor bar. Nearly constant tension in the spring as well as the force to activate the slide is provided by this single coil. This volute spring lets the shaft be moved closer to the frame thus allowing maximum axial movement. 174 These mechanisms rely on a flat spring for their efficient actions. This cushioning device imparts rapid increase of spring tension because of the small pyramid angle. Its rebound is minimum. This spring-mounted disk changes its center position as the handle is rotated to move the friction drive. It also acts as a built-in limit stop. This hold-down clamp has its flat spring assembled with an initial twist to provide a clamping force for thin material. Indexing is accomplished simply efficiently and at low cost by flatspring arrangement shown here. .
