A key clamp for a key cutting apparatus is provided. The key clamp comprises a first jaw and a second jaw. The first jaw comprises an engagement surface having a widthwise dimension and a lengthwise dimension. The engagement surface comprises a first row of serrations, arranged along a lengthwise edge of the engagement surface, and a second row of serrations. The second jaw has an engagement surface comprising a row of serrations for location, in the widthwise dimension, between the first row of serrations in the first jaw and the second row of serrations in the first jaw.

A method for clamping a workpiece that is first provided with depressions, wherein these depressions are, arranged in one row or a field having a grid distance of 3 mm. The grid distance is thereby the center distance of the depressions, the depth of which is preferably less than the length of the depressions measured in direction of the row of the depressions. The distances between the depressions preferably correspond approximately to the length of the depressions. The grid distance of 2.5 mm to 3 mm has proven to be an optimum for a wide range of usable workpieces and materials.

The invention relates to vise pivotal jaws for holding irregular shaped objects and that are modular to work on various sized prior art vises. Also relates to pivotal jaws having aid to return back to a neutral center position. The design allows ease of disassembly for cleaning and reassembly.

A vice jaw deflecting structure, comprising a vice main body, a lead screw positioning seat, a lead screw, a first flexible jaw set and a second flexible jaw set; the guide slot of the vice main body has a bottom surface, a first side wall surface, and a second side wall surface; the first flexible jaw set and the second flexible jaw set have a slide, a jaw and a limiting component; the slide is configured with a limiting block protruding toward the jaw, the limiting block protrudes toward the lead screw positioning seat and is formed with a -shaped stop block having a curved top view; the jaw bottom surface has a first convex wall surface and a second convex wall surface matching and contacting the first side wall surface and the second side wall surface.

The utility cart of the present application comprises a frame, at least two wheels and a storage panel. In one embodiment, the storage panel is removable and capable of being replaced with an alternate storage panel.

A workpiece clamp device capable for changing clamp angle is arranged on a base plane and comprises a first and a second movable blocks, a driving block, at least one first and at least one second elastic members, at least one first and at least one second cylinders, and at least one third and at least one fourth elastic members. Since the first and the second cylinders are slightly rotatably and detachably respectively embedded in the first and the second embedding grooves to make the first and the second rough surfaces be exposed and the elasticity of the third and the fourth elastic members is cooperated therewith, the first and the second rough surfaces are slightly fine-tuned based on the shapes and sizes of the workpieces so as to be suitable for clamping and fastening the workpieces with different shapes.

Disclosed is a gripper assembly used in milling or CNC machines with one or more than one axes, adapted to grip the workpiece from two or more directions at the same time and with the same force.

A clamp, particularly for apparatuses for welding pipes, including a lower jaw and an upper jaw that are mutually opposite and hinged; each jaw is substantially made of plastic material; advantageously, each jaw includes a portion made of plastic material and at least one insert constituted by an interlocking metallic structure that is co-molded within the portion made of plastic material.

A machine-tool vise is described that employs an articulated two-piece movable jaw including a jaw nut that engages the lead screw and a jaw bit coupled to the jaw nut through a slanted interface wherein the slanted interface between the nut and the bit is located at the top of the bit to eliminate the secondary effects found in the prior art.

Disclosed are vise embodiments designed to lower manufacturing cost and work well in an automated CNC milling production environment. The disclosed embodiments include rigid vises having high clamp force and low internal friction. The embodiments include features for resisting the ingress of metal chips into sensitive moving parts through the use of commonly available seals and the flow of CNC coolant to flush metal chips away from the vise.