SU338306A1 - STRAW BREAKING ROUND ROTATING CUTTER - Google Patents

Description

Round rotary cutters are known in which the axis of the cutting element is angled to the axis of the holder and the end face is the front surface. The disadvantage of these incisors is the inconsistency of the cutting edge oscillations with the longitudinal feed tension, which leads to a deterioration of the machinability.

The proposed cutter differs from the known one in that the cutter shank, its element, having an end not perpendicular to its axis, is placed in a movable sleeve, the axis of which coincides with the axis of the cutter holder, and, in the holder, there are two plungers, one and J of which the smaller diameter contacts the front end with the end face of the cutting element shank, and the other plunger, larger.) diameter, with the end face of the movable sleeve, and both of the plunger with their rear ends interact with the hydroelastic fluid placed in the holder.

This design ensures iioBbiujeHiKj processing cleanliness.

The drawing shows the described re :: op, side view in section.

The cutting element J with a circular cutting edge is mounted on rolling bearings 2 in a sleeve movable in oceiBOrM .7, the axis of which coincides with the axis of the holder - / .ts. Butt 5 of the shank 6 rezupu | his ele.mepta

non-perpendicular to its axis, i.e. has face beating. In the holder there are two plunger 7 and 8. The lunger 7 - (of smaller diameter) contacts with its front end with the end of the shank of the cutting element, and the plunger 8 (of larger diameter) - with the end of the movable sleeve -. The diameters of the plungers are chosen based on design considerations.

The angle of rotation of the cutting element should ensure its steady rotation. The back ends of the plungers interact with the hydraulic plastic 9 placed in the holder.

In the process of cutting, the element receives rotation from the part, as a result of which its non-perpendicular end acts on the ball 10 and through the nago on the plunger 7 (due to the axial cutting force). Since the axial alloy of the cutting acts like a ke and pa of the plunger 8, the hydronlastics becomes under pressure. Due to TOiO, that the plunger 8 has a diameter larger than the diameter of the plunger 7, its force on the end of the hub is greater than the force that the plunger 7 exerts on the end of the shank of the recurring element. Consequently, the latter, as a result of axial movement of the sleeve, receives axial movement. The plunger 7 is moved in a direction opposite to the direction

filing. The pressure of the hydroplastic on the plunger 7 contributes to the advancement of the cutting element forward. As the end face of the shank of the cutting element approaches its minimum value, the nosledin, together with the movable sleeve, returns to the initial position under the action of the cutting force.

The described cutter is intended for finishing the treatment of external and internal surfaces of rotation.

PRED MET & A REFERENCE

Chipbreaker round rotary cutter, the cutting element of which is located

at an angle to the axis of the holder, and its end is the front surface, characterized in that, in order to increase the cleanliness of processing, the shank of the cutting element, having an end not perpendicular to its axis, is placed in a movable sleeve, the axis of which coincides with the axis holding the tool , and in the holder there are two plungers, one of which, of smaller diameter, contacts the front

the end face with the end face of the cutting element shank, and the other nunger, of larger diameter, -: With the butt end of the movable sleeve, and both the plunger, with their rear ends, interact with the hydraulic plastic placed in the holder.

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