Research on Ball Clamping Reliability of Bolt Nodes in Gansu University of Technology ZHOU Shanle, MA Zhihong, XIE Liming, ZHANG Yonggui, JIANG Hook, College of Mechanical and Electrical Engineering, Gansu University of Technology. Ganzhou Lanzhou 73 tight reliability. The results of the experiment are clearly drilled. When the center is tight and reliable milling. The claw axis direction is stable and reliable, and it is inclined in the direction of the axis, but the inclination of the other jaws can be overcome by each pair of jaws, so that the clamping is stable and reliable. The bolt joint ball indexing clamping device is an important installation in the NC machining technology and numerical control processing equipment for the arbitrary distribution of the axis of the ball through the center of the ball. 5, It can complete the indexing of the threaded hole of the arbitrary position of the global spherical position of the node ball. Clamping, its indexing accuracy and efficiency are directly related to the clamping reliability. 1 bolt node ball indexing fixture station This structure cabinet 1 is based on the virtual spherical core as a reference two-stage floating 祀 cross-combined into a numerical control indexing clamping structure simple. The part of the device is divided into a supporting portion, which is composed of a cylinder 12 and a supporting claw 7, and completes the support of the node ball 5. The first part is the clamping part, which consists of the squeezing machine 8. The speed reducer 1. The swaying joint 10 the left-hand screw main shaft ç˜ 2 jaws 3 the driven head box 6 jaws 4 and the node ball 5 are completed. Clamping of the node ball. There are 2 sets in this part, which are perpendicular to each other and are defined as the axis and 5 axes. The first part is the indexing part, which is composed of the spindle jaws 3 inside the active spindle box 2 of the indexing motor 1 and the spindle jaws 4 and the node ball 5 inside the spindle head box 6, and the indexing is realized in the single-axis clamping state. This part is also 2 sets, vertically distributed, with 7 axes above the axis and 5 axes above the axis. 2 bolt node ball indexing clamping and clamping principle When the piece is placed in the initial position of the supporting claw, the clamping motor drives the left and right rotating screws through the reducer 9 to drag the nut under the headstock, so that the left and right two spindles The box and the jaws move toward the center of the ball to complete the clamping. In order to ensure the constant positioning of the center of the ball in the repeated clamping or high positioning accuracy of the center of the ball, a two-stage floating mechanism is adopted to realize the omnidirectional floating clamping during the clamping process. The first level of the jaw jaws moved, 1 small through the jaws received date 2002006 fund project State Planning Commission nine science and technology projects 9612521. Indexing motor 2. Active headstock 3. Active jaws 4. Driven jaws 5. Node ball 6. Driven spindle box 23040 rocker drill 1 set; cutter wash carbide single head is knife = ± 8,1; drill is still speed steel. 1 diameter 241 hair also roundness error 2. 3.2 Experimental procedure 3.2.1 Clamping the workpiece First place the workpiece into the clamping device for clamping. The device's input 1. Floating coupling. Right-handed bar 12. Cylinder raj point ball indexing device structure simple. By clamping and floating, the other clamping points are sequentially contacted with the workpiece, so as to adapt to the large roundness error of the blank ball, the faulty ball specified in 75.191 is called a mistake, 1.52.5. In the actual design, the clamping jaw is required. The workpiece surface has at least 3 contact points and is distributed over an arc of more than 180. The first stage floating screw can be floated by moving left and right. The motor drives the screw through the reducer and the floating coupling, and the floating coupling is fixed in the axial direction due to the floating coupling. therefore. The lead screw can be axially floated, and the lead screw floats the jaws left and right through the nut and the headstock. After clamping the workpiece. When one of the jaws first contacts the workpiece, the floating screw does not move toward the center of the ball because it is not axially fixed. 1 opposite; the jaw continues to move 1 ball. Finally clamp the workpiece. Self-locking is achieved by the friction angle of the lead screw to complete reliable clamping. 3 Clamping Reliability Experiment 031 The distance between the clamping force and the center of the screw is the size of the arm. It is the helix angle of the vise screw and the friction angle of the vise. It is the diameter of the vise screw. Considering the transmission efficiency of 1 = 75. The actual clamping force generated is about 23,676 teams less than or equal to the clamping force generated by the clamping device. 3.2.2 Milling and boring surface cutting experiment The node ball clamping experimental device is fastened on the milling machine to perform trial cutting. The cutting depth is 3.6, which means that the circle after the maximum workpiece washing platform is used to understand the working reliability of the floating clamping mechanism designed for the floating blank clamping of the forged blank ball, the clamping force generated on the workpiece and the actual drilling in the iron plane. A machining error occurs in the state of cutting. Design the following experimental methods. 3.1 Clamping reliability Experimental device and equipment The floating cone jaws are equipped with a vise to form a set of experimental clamping devices. 2. The jaws can float. After clamping, it can be self-locking. After the single-pass feed milling is completed, the node ball iron cutting platform is tested. 3, the change error of 2.3.4 points is detected as the worst of the simulated node ball in the whole process. The two sides of the clamp 180 are respectively sized, that is, three planes and two planes are respectively processed at two clamping positions for clamping. At this time, at the symmetrical position of 180, the contact circle of the jaws includes three secants and three arcs formed by three planes, and the other contact circle of the jaws includes two arcs formed by two planes. For the secondary feed, the feed allowance is 3.6. The feed rate is still 4, and the 4 points of the platform are still detected after the cutting is completed. The high and low errors of 3 points are still 0.002, and the high and low errors of 4 points are 0.02 3.2.3 The experiment was conducted on a rocker drill. The cutting speed is 7 sets of 4 points. Then drill the hole. When the drilling depth is 15, the hand feels hot when the workpiece is touched. At this time, the platform stops and the platform is tested again. The error of the platform is 0.002, which is less than 0.003. When the ball is drilled, the cutting force direction is mainly downward, and the node ball platform generates a variation of 0.003,1. This is a slight contact deformation and a change in the gap caused by the components in the machine tool holder. Therefore, the workpiece is also reliably clamped and is not loose. The occurrence of fever is mainly caused by poor cooling during the experiment, so in the actual processing, the method of directly spraying the drill with the emulsion can solve the problem. 4 Conclusions For the clamping device consisting of the conical floating jaws, the clamping is stable and reliable during drilling. The clamping device formed by the conical floating jaws produces a tilt of 0.02 jaw 1 around the jaw axis when the clamping condition is the worst milling of the largest iron plane. Since the actual device uses two pairs of conical jaws, an orthogonally symmetric clamping device and an additional force of the supporting claws at the bottom of the workpiece blank, the designed clamping device can also be stable and reliable when milling the plane. When the indexing clamping device is put into production, the netting should be processed on the contact surface of the jaws to increase the friction and make the clamping effect good. 3.3 Experimental results Analysis During the milling plane test, the cutting allowance is not very large when the tool is divided into two passes. Although the detection of 4 points has 0.002,1 error, the error is small, and the geometric error of the machine itself is mainly Affecting the milling plane test cuts with a secondary feed cutting allowance of 3.6, resulting in a large cutting force, the cutting force direction is mainly down to Cai Shanle, Jiang Wei, Zhang Yonggui. Preliminary Study on the Integration of Grid Bolt Node Balls 4. Journal of Gansu University of Technology, 2002713537. 21 Cai Shanle, Jiao Weidong, Zhang Yonggui. Identification and extraction of clamping information of NC machining balls in the grid. Journal of Gansu University of Technology, 2002732326. And the torsional moment on the jaw axis. In the direction of the jaw axis, 3 points 3 Sun Heng, Fu Zeshao. Mechanical principle. 4th edition. The error of Beijing higher education is 0.002, indicating that the workpiece does not have Songyu Publishing House in the axial direction, 13.135138. move. The 2,4 point error on both sides of the jaw axis is 0.02, indicating that the workpiece produces a small amount of torsional moment around the jaw axis. If a practical indexing clamping device is designed, two pairs of jaws are used for orthogonal clamping 5, and each pair of jaws can overcome the cutting torque generated by the cutting force against the other jaws, thereby achieving reliable clamping. If a support claw is placed on the bottom of the node ball to hold the workpiece, the effect will be better. Compared with the traditional toilet cover, the Square Bidet Toilet Seat has been greatly upgraded in terms of appearance and function. Its appearance design is more modern, concise and grand, which can better match the modern bathroom decoration style. Square Bidet Toilet Seat, Intelligent Toilet Seat, Square Toilet Seat, Square Heated Toilet Seat Guangdong Fabia Intelligent Technology Co., Ltd , https://www.fabiaintelligent.com
In terms of function, the square Smart Toilet seat usually integrates a variety of intelligent functions. For example, it can be automatically cleaned and flushed, so that users do not need to manually clean, which improves the hygienic safety of use. At the same time, the square bidet toilet seat can also adjust the water temperature and water pressure, and adjust the temperature and intensity of flushing water according to the needs of users to achieve a more comfortable use experience. In addition, some advanced models of square smart toilet covers are also equipped with a warm air drying function, which can help users dry quickly after use to avoid being troubled by moisture.
In short, the square smart toilet seat is a high-end bathroom product that integrates a variety of intelligent functions. It not only improves the convenience and comfort of use, but also has the characteristics of being more environmentally friendly, energy-saving and hygienic.
Research on the Reliability of Bolt Node Ball Clamping
Research on Ball Clamping Reliability of Bolt Nodes in Gansu University of Technology ZHOU Shanle, MA Zhihong, XIE Liming, ZHANG Yonggui, JIANG Hook, College of Mechanical and Electrical Engineering, Gansu University of Technology. Ganzhou Lanzhou 73 tight reliability. The results of the experiment are clearly drilled. When the center is tight and reliable milling. The axis of the claw is stable and reliable, and it is inclined around the axis.