A cutting device for engaging a rock face includes a disc body supported for rotation about an axis of rotation, and a plurality of peripheral portions removably secured to the disc body. Each of the peripheral portions including a plurality of cutting bits positioned on a peripheral edge. The peripheral edge of each peripheral portion is aligned with the peripheral edges of adjacent peripheral portions.

A process and system provides for atraumatic preparation of morcelized Tissue Particles (MTPs), such as Full Thickness Skin Graft Particles (FTSGPs), cartilage particles and other organ tissue particles, in a liquid medium. The resultant tissue product may be a suspension of Tissue Particles in an aqueous solution and containing highly viable cells and may be rapidly prepared at bedside or in the operating room and conveniently delivered to a patient through a syringe or similar applicator. The MTPs may be used for surgical applications including wound healing, cosmetic surgery, and orthopedic cartilage repairs.

One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.

A cutting blade has two ends and two sides and includes a mounting hole mounted on a front housing of a brush cutter; a convex member on a central portion of either side and having two notches at two ends respectively and an intermediate, curved cutting edge; and two cutting edges on either side with the convex member disposed between, each cutting edge having a first end terminated at the notch and a second end terminated at either end. Two cutting edges of different sides with the mounting hole disposed between comprise a plurality of groups of an outward inclined cutting member and a cavity. The other two cutting edges of different sides with the mounting hole disposed between comprise a plurality of groups of an inward inclined cutting member and a recess.

A method of making single-dose capsules, comprising cutting transverse flat areas of a water-soluble tape by a rotating knife roller and an anvil.

A cutting device for cutting rock includes a disc and a plurality of cutting elements secured to the disc. The disc is supported for rotation about an axis of rotation, and the disc includes a peripheral edge extending around the axis of rotation. The plurality of cutting elements are spaced apart along the peripheral edge of the disc and positioned in a cutting plane. Each of the cutting elements includes a base portion and a cutting portion including a cutting edge, and the cutting portion has a width that is larger than a width of the base portion.

Disclosed is an ultrasonic cutting method employing a straight-blade sharp knife. The ultrasonic cutting method employing the straight-blade sharp knife includes the following steps: S1, measuring parameters of the straight-blade sharp knife; S2, initially rotating, by the straight-blade sharp knife, around an axis thereof, such that a rear knife surface of the straight-blade sharp knife is attached to or is away from a machined surface, and performing ultrasonic vibration cutting on a material according to a machining track; S3, performing quality detection on the machined material surface obtained by the ultrasonic vibration cutting, completing the machining if the surface passes the detection, and performing step S4 if the surface does not pass the detection; S4, further increasing an amount of rotation of the straight-blade sharp knife during initial rotation around the axis thereof, performing the ultrasonic vibration cutting on the material according to the machining track, and performing step S3.

A slitting machine for removing a strip from a sheet of material. The slitting machine has a blade assembly with first and second cutting blades, and a perforating blade arranged between the first and second cutting blades. The first and second cutting blades are arranged to cut the sheet of material to define the strip and the perforating blade is arranged to perforate the sheet of material to define an end of the strip.

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.

The present disclosure provides rotatable blades with easily replaceable cutting edges, and methods of making and using same.