SU108930A1 - Device for automatic commissioning and adjustment during the operation of lathes and similar machines - Google Patents

Description

A device for automatic adjustment and adjustment in the process of turning lathes, etc., using a measuring head that closes an electrical circuit to send a signal about movement by means of a copier to a cross-section toolholder in the event that the workpiece size leaves the tolerance limits.

A distinctive feature of the proposed device of the same type is that the cam is made movable in the direction of movement of the transverse tool carrier. Such an embodiment of the proposed device eliminates the need for the message of additional movement to the transverse tool support in the conditions of use of the copy-track system.

FIG. 1 is a schematic diagram of the proposed device; in fig. 2 is a view along arrow A in FIG. one; in fig. 3 - side view of the copier.

After pretreatment (roughing) of the first stage, the cutter returns to the position corresponding to the start of machining the part during roughing. A cycle consisting of a rough run of the first stage and the return of the caliper to the original i, addition, is carried out using limit switches and a copying system. After this, the actual paladating process begins. A hydraulic cylinder} leads the measuring head 2 to the workpiece 3, which continues to rotate.

When the measuring head 2 approaches, the workpiece 5 for measuring the stop 4, which is rigidly connected with the body of the measuring head 2, reaches an adjustable stop 5, which is installed according to the specified size of the workpiece (part) o. If the size of the workpiece exceeds the specified, then the measuring tip 6, moving relative to the body of the head 2, closes the contact (+). After the measuring head takes the marked position, its body is rigidly connected with the cross slide 7 and, therefore, with the cutter with the help of a clamp 8 acting as a feedback. With an increased amount of workpiece number 108930

Feast 9 is relegated to the left. At this time, the transverse support 7 follows the cam and moves the cutter “to the part. Since the body of the measuring head 2 is rigidly connected to the transverse support 7, it also moves in the same direction. The moment of opening the contacts of the measuring head corresponds to a given size of the workpiece (which is achieved by setting the measuring head body relative to the adjustable stop using the adjusting screw 10} once and therefore moving the copier and rubber ends when the cutter is set to the position corresponding to the specified size of the workpiece. Measuring tip 6 the whole measurement process is in contact with the workpiece 3 and, due to the presence of the spring L, moves to the right relative to the core baleen head as it moves along with the slide to the left.

The distance between the contacts (+) and {-) of the measuring head 2 is proportional to the tolerance field. The control of the indicated movements of the elements of the device is carried out by an electric circuit.

When the measuring head 2 approaches the workpiece 3, the normally open contacts a and b are closed, but first the contacts b of the intermediate relay RPZ close the contacts of the electromagnet 8 clamping normally open, and then the contacts a of the measuring head circuit. If the workpiece diameter after the rough pass is greater than the specified one, then contacts b of the measuring head 2 will close, the PfJi intermediate relay will work and close the 9Mi electromagnet circuit of the anchor plug 12. The current to this electromagnet is the same as in the BMz electromagnet of the pawl 13, goes through the chopper I current. Thus, the current in the electromagnets 3Mi and EM is pulsed. Obviously, in this case, in one pulse, the ratchet wheel 14 can turn only one tooth.

When the anchor fork 12 is in operation, the ratchet wheel 14 rotates clockwise, which causes the copier 9 to move from the center line of the machine under the action of the screw pusher. The same process, but with the rotation of the ratchet wheel 14 counterclockwise, occurs in the case of an underestimation of the diameter of the workpiece. The ratchet wheel is turned with the help of the pawl 13. In this case, the coil spring 15 is twisted (cocked). The SMz electromagnet must not only overcome friction in the drive chain of the oscillating copier, but also charge the spring, while the electromagnet of the anchor fork 12 only turns it, as if allowing the ratchet wheel to turn under the action of the spring. Therefore, the electromagnet of the dog must be of greater power.

Before processing each subsequent part, the copier 9 must be installed in a certain field of the axis relative to the axis of the part. For this purpose, a stop 17 is provided in the rack 16. When the ratchet wheel 14 returns to its original position, it reaches its flap 18 to the stop 17 and stops at a strictly defined position. The return of the ratchet wheel to its initial position occurs under the action of the coil spring 15 when the locking pawl 19 is removed from the ratchet tooth. To fix the strip 18 on the ratchet wheel, the corrugations of a rectangular profile are applied to its inner surface.

Subject invention

Claims (3)

1. A device for automatic adjustment and adjustment in the process of turning lathes, etc., using a measuring head, which closes an electrical circuit in the event that the size of the workpiece leaves the tolerance limits to signal the movement by means of a copier to a transverse tool support, characterized in , in order to eliminate the need for a message to supplement the full movement of the transverse toolholder in the use of the copier-tracking device, the copier is movable in the directions of movement of the transverse tool carrier. 2. The form of the device according to claim 1, characterized in that, in order to communicate the movements, a reversing ratchet mechanism acting on the Ejector pusher is used, the dogs (or anchor forks) of which are connected to electromagnets controlled by the measuring head. 3. The form of the device according to paragraphs. 1 and 2, characterized in that, in order to rigidly connect the measuring head to the chuck: with a slide after it closes an electrical circuit, a clamp is used that is actuated by an electromagnet of the said circuit. / 5/7 S . ../.