SU455786A1 - Device for punching holes and deforming the adjacent areas - Google Patents

Description

The power heads 5 are mounted on the frame. In addition, the device is equipped with a power head 6 for drilling holes.

Each power head 6 consists of external 7 and internal 8 hydraulic cylinders. The inner cylinder body is an outer piston. The outer cylinder with the piston and the rod 9 serves to form the hole, and the inner cylinder 8 with the rod-piston 10 and the pusher I is for punching the hole. The rod 9 communicates shuffling: to the punch 12 for squeezing the wells, and the piston rod 10 to the punch 13 for punching holes. The spring 14 and the grip 15 serve to return the punch 12 to its original position. Punches 1, 2, and 13 interact with die 16. Power head 6 is a hydraulic cylinder, controlled by spool 17, which simultaneously controls the well extrusion cylinder, and spool 18, connected in series with spool 17.

The device works as follows.

The rims are mounted on the brackets 2, and the button 19 turns on the hydraulic actuator 20. Oil from the pump 21 enters the cavity of the cylinder 4 of the clamping mechanism 3, as a result of which the rim is clamped. At the time of clamping the rim, the rod of the hydraulic cylinder 4 presses the limit switch, which gives the command to turn on the electromagnetic clutch 22, which sits on the shaft 23 of the command device 24.

The shaft 23, rotating, through the cam 25 fixed on it, interacts with the spool 17, which opens the channels connecting the pump 21 to the working cavities of the cylinders 5 for squeezing out the holes and the force 6 of the piercing hole for the nipple. The rods 9, with the punches mounted on them, move forward and abut against the rim, after which the formation of holes and the punching of holes under the nipple take place. At the end of the hole formation process, the material warping rate is reduced. This is due to the fact that the cam 25, acting on the spool 17, first completely opens the channel connecting the pump 21 to the power heads 5, and then gradually reduces the flow area, resulting in a reduced outflow of fluid through the channel and, therefore, smoothly decreases well formation rate.

After the hole formation process is completed, the spool 17 opens the valves connecting the pump 21 to the working cavities of the hydraulic cylinders 8 for punching holes. The piston rods 10 with the pushers 11 fixed on them, moving forward, press the punches 13 on the pistons and punch holes in the holes. After punching the holes, the direction of pressure in the hydraulic cylinder 8 is changed, the piston piston 10 with the push rods 11 are returned to the original floor: The punches 13 under the action of the spring 14 and the grippers 15 are returned to the initial position. Then with the help of zolotoyikov 17 and 18 and limit switch 26

the channel connecting the cavity of the power head 6 with the spool 17 is turned off, and the hydraulic cylinder 27 activates the rotation mechanism (in the drawings, not shown) of the rim, which rotates the rim at the required angle, into

particular at 36 °. After the first turn, a signal is applied to the spool 18, it overlaps the cavity of the power head 6, as a result of which the piston rod 10 remains in the initial position, while the remaining power heads continue to perform the formation of holes and punching holes.

After all the required holes have been formed, the n holes are switched off by the electromagnetic coupling 22, the shaft 23 is stopped, the pressure in the hydraulic system is relieved, and the rim is opened.

Subject invention

Claims (3)

1. A device for punching holes and deforming the sections adjacent to them, containing a drive in the form of a two-stage telescopic cylinder connected to a fluid supply line and a control system with pistons with rods carrying an I-stamp tool for punching and deforming, characterized in that, in order to be able to produce openings located at a required angle to the axes of the product, in particular the rim of the motorcycle wheel, the punching tool is associated with a rod telling it to move with a wedge insert. 2. The device of claim 1, characterized by TCiM, is that, in order to improve the performance of the device, the cavity of the cylinder that imparts movement to the punching tool is isolated from the cavity of the cylinder, which transmits movement to the tool to deform. 3. The device according to paragraphs. 1 and 2, in order to increase plasticity the material of the product in the process of deformation, the control system contains a cam and a spool interacting with it, smoothly regulating the filling of the cylinder cavity and the speed of movement of the stem-knob carrying the tool for deforming, in particular for forming holes.