A rotary cutting disc (10) comprising two coaxial mutually opposed disc-shaped elements (12a, 12b) each having a circumferential edge, wherein circumferential edges (14a, 14b) of the disc-shaped elements (12a, 12b) are joined together forming a cutting edge (16) of the cutting disc (10); wherein each of the disc-shaped elements (12a, 12b) comprises one or more at least partly curved elongated deformation lines (30), wherein the one or more deformation lines (30) have a radial distance from the centre (26) of the cutting disc (10) that increases along at least a part of the length of the deformation line (30). The rotary cutting disc (10) has an increased critical speed that allows improving the efficiency of a cutting operation with a cutting disc while maintaining acceptable levels of quality, cutting precision and safety.

An apparatus for cutting polymer includes a rotor having a base with a first side and a second side opposite the first side. The rotor includes an outer annular wall extending from the first side and defining a number of slots, an inner annular wall defining a number of slots and extending from the first side and surrounded by, and spaced apart from, the outer annular wall. The rotor also includes blades extending from the first side and positioned within the inner annular wall. A circular-shaped stator also defines a number of slots. At least a portion of the stator is positioned in a space between the outer annular wall and the inner annular wall of the rotor.

Provided is a disclosure for a cutting device configured to control a linear speed of a cutting wheel as the cutting wheel gets smaller with use.

A cutting device for cutting a pipe having a pipe wall. The cutting device includes an elongate carrier having a tool end which is engageable with a power tool and an opposed free end. The device includes a guide wheel located at the free end of the carrier which is loosely mounted thereon for rotation relative thereto, having a bearing surface extending parallel to a longitudinal axis of the carrier. The device also includes a cutting element having a peripheral cutting edge which is located adjacent to the guide wheel being positioned intermediate the guide wheel and the tool end. The cutting element is of greater transverse dimension than the guide wheel so that when the bearing surface bears against an internal surface of the pipe the distance between the cutting edge of the cutting element and the bearing surface enables the cutting element to cut through the pipe wall.

In order to prevent slices separated from a product caliber by a slicer from adhering temporarily to a cutting surface of a blade and not coming to rest on the desired position on a base when the slices are ejected, the arrangement of one or more recesses in the blade back facing away from the product caliber is suggested in a specific way.

Provided is a disclosure for a cutting device configured to control a linear speed of a cutting wheel as the cutting wheel gets smaller with use. In one example, the cutting device includes a cutting wheel; an actuator to rotate the cutting wheel; a power source configured to provide power to the actuator for rotating the cutting wheel at an adjustable rotational velocity; and control circuitry configured to adjust the rotational velocity of the cutting wheel to maintain a substantially constant surface speed.

In a plastic strand granulator the width of a cutting gap between a cutting rotor and a knife strip is gauged by an adjustment mechanism by setting the position of the knife strip. For this purpose the adjustment mechanism has an actuator with a differential thread having a reducing transmission ratio. The adjustment mechanism can advantageously be gauged automatically to a predetermined cutting gap width by a control circuit, wherein the adjustment mechanism is gauged in dependence on vibration parameters which are captured on the knife strip or on the cutting rotor. For this purpose, ultrasonic vibrations are introduced into the component in question and detected at some distance therefrom and evaluated.

A biaxial type sawing device includes a base, a worktable, a sawing unit, and a braking block. The worktable is disposed on the base for supporting a workpiece. The sawing unit has saw arm provided with a bottom end thereof pivoted to the worktable through a first shaft, a saw blade box pivoted to the top end of the saw arm through a second shaft, a motor assembled with the saw blade box, and a saw blade connected with the motor and partially covered by the saw blade box. The braking block is adjacent to the saw blade and pivoted to the second shaft. Therefore, when the saw blade touches an operator's hand, the braking block is triggered to press the saw blade, such that the saw blade is retracted away from the operator's hand together with the saw blade box, thereby enhancing safety in use.

A rotationally actuatable blade, particularly for automatic industrial slicing machines, the blade comprising a blade body which extends around a main axis and has a central region for fixing a spindle for actuating the blade with a rotary motion about the main axis and a perimetric region which ends toward the outside with a sharp edge, the transition region, comprised between the central region and the perimetric region, having a plurality of concentric circumferential bends which follow each other with alternating bending directions and with extensions, parallel to the main axis, which decrease from the central region in the direction of the perimetric region.

The exemplary embodiments relate to a circular blade (1) having two end faces (2) and a peripheral cutting edge (3). The blade includes two axial sides (12, 14). In at least one axial side at least one material tapering (4) is formed running concentric to the cutting edge (3), so that a thickness of the circular blade (1) decreases radially outwardly towards a minimum tapering thickness (5) due to the geometric formation of the material tapering (4). The minimum tapering thickness (5) is dimensioned so that the circular blade (1) cannot be broken at the material tapering, so that a successor cutting edge can be produced by grinding only in the region of the material tapering.