SU363572A1 - AUTOMATIC MACHINE FOR SHARPENING ROUND DIES - Google Patents

Description

The acquisition may find application in the tool industry.

Machines for sharpening round dies are known, in which the feeding movements are carried out manually. The machining accuracy of these machines and the sharpening performance depend on the skill level of the worker.

The purpose of the invention is to improve the quality of sharpened dies.

For this purpose, a feed mechanism is used, which provides for returning and rotational movement of the grinding wheel along a predetermined path using an elastic element, for example in the form of a spring, for unstressed operation of the drive.

FIG. 1 shows the proposed automaton, general, and its form; in fig. 2 - grinding wheel, longitudinal section; in fig. 3 - grinding wheel, Cross-section.

On the base 1, the headstock of the product 2, the orientation mechanism 3, the loading mechanism, the grinding head 4 are installed. Inside the base there is a tank with a cooling pump and an oscillation mechanism. Editing mechanism 5 is located on the rotary mechanical arm 6.

The pump station 7 and the electrical equipment cabinet 8 mounted above it are installed behind the machine, the vibrating bunker 9 is on a separate tank, to the left of the machine.

Grinding headstock consists of a body.

in which the rotary sleeve 10, the hydraulic motor 11, gears 12 and 13, the crank shaft 14, the connecting rod / 5, the toothed sector 16 are mounted. Inside the sleeve 4 on the eccentric axis 17 a shirt 18 is installed, into which a spindle 19 is inserted.

The screw 20, mounted in the sleeve, is intended to displace the axis of the grinding wheel from the axis of rotation of the sleeve. In the housing of the headstock there are a coupling 21 with a wheel storage wheel m. 22, a hydraulic cylinder 23, on the rod of which a doggie 24 is installed, a lever 25 with a lock 26 and an emphasis 27, a hydraulic cylinder 28 and a turning nut 29. The body of the grinding grandma is mounted on ball guides , on a fixed rack in which a mounted hydraulic cylinder 30 and a screw 31. A spring 32, pivotally connected to the sleeve and the housing, is intended to damp the inertial forces in the phases of braking and acceleration of the grinding head.

The proposed automaton works as follows.

The plates from the vibrating hopper 9 move along the chute to the orientation mechanism 3. The orientator rotates and moves forward, turning the plate until its holes coincide with the pins of the mechanical arm 6- The plate takes its place in the slot of the mechanical arm.

The latter turns and carries

a plate on the axis of the product shishdel. The plunger is pushed into the chuck. Includes grinding spindle, oscillation mechanism and feed mechanism. The hydraulic motor // communicates the rotary sleeve 10 through the kinematic chain of gears 12, 13, crookedly (tire shaft 14, connecting rod 15, toothed sector 16, reverse-rotation feed movement. Spring 32 connects the movable sleeve with the wheelhead body 4 and ensures smooth operation. mechanism in the phases of acceleration and deceleration.

The cycle of the machine consists of transitions corresponding to the number of holes in the cloak. Processing is performed sequentially. Upon completion of sharpening the last chip hole of the die, the headstock of the product returns to its original position, the number of double strokes of the grinding head is reduced. The hydraulic cylinder 28 locks the grinding head in the initial position, locks the crank shaft, and connects the clutch 21 to the wheel wear compensation mechanism. The cylinder produces a feed to increase the eccentricity by an amount somewhat greater than the wear value of the grinding wheel, which will then be removed by the diamond of the dressing mechanism.

Subject invention

A machine for sharpening round dies with a spindle head carrying a grinding head driven by a help and a feed mechanism, characterized in that, in order to improve the quality of the dies, the nodach mechanism is mounted in the spindle head and made in the form of a sleeve elastically connected with the body of the headstock, inside of which there is a grinding head on the swing arm.