A method of stopping vibration of a columnar work during processing thereof, includes the steps of providing a cylindrical columnar work having an outer circumferential surface divided into a non-processed region and at least two recessed processed regions with a circumferential cross-section forming a perimeter including two spaced apart non-processed perimetric segments separated by two spaced apart processed perimetric segments, providing a vibration stop including only two holding parts having arc shaped surfaces, locating the columnar work between the arc shaped surfaces of the holding parts adjacent the perimeter with each processed region radially inward, orienting the columnar work such that each arc shaped surface contacts the outer circumferential surface at both spaced apart non-processed perimetric segments with one processed perimetric segment located therebetween, each arc shaped surface, and holding the columnar work with the holding parts to prevent vibration of the columnar work during processing of the columnar work.

A machining assembly which allows for precise and repeatable machining operationsprimarily tube notchingto be carried out by an operator in various situations, and is specifically designed for hollow-form parting without use of a mandrel in prototyping and small-scale production. This system allows operators to cut copes in both typical and atypical materials, and offers the ability to produce double end-coped workpieces quickly. Additionally, the preferred embodiment can be equipped for use as a light-duty milling machine which incorporates portability with the benefits of traditional milling centers.

A clamping mechanism for an adjustable length tool is provided herein. The clamping mechanism includes a body having a top end, a bottom end opposite the top end, and a top portion proximate the top end; and, a lever rotatably coupled to the body between an unlocked position and a locked position, wherein the lever engages with the body during a movement of the lever to the locked position to cause a deformation of the top portion of the body. According to one embodiment, deformation of the top portion of the body is structured to prevent relative movement between an inner pole of the adjustable length tool and the top portion of the body.

A circular hydraulic press reforms and resizes a chamber opening in a combustion chamber housing. The press comprises a bar having a U-shaped end and a pair of free ends. The press comprises a panel having a C-shaped edge, a mounting edge, and a pair of slotted edges. The U-shaped end of the bar and the C-shaped edge of the panel buttress the perimeter of the chamber opening. The slotted edges and a pair of tubes on the slotted edges slidably receive the free ends of the bar to enable displacement of the panel towards the bar. A disk having a predetermined annular shape and circumference positions in the chamber opening. A hydraulic piston displaces the C-shaped edge of the panel towards the U-shaped end of the bar to press the chamber opening against the disk, and thereby reform the disk to substantially the same shape and circumference as the disk.

Method and apparatus of manufacturing a toric contact lens comprising providing a toric insert (12) without an orientation mark to be used in forming a toric contact lens mold section; placing the toric insert without an orientation mark in an orientation mark fixture (10) comprising a single piece fixture housing (20) structured to hold a toric insert at an angle specified for an orientation mark, the fixture housing having intersecting surfaces (36, 40) which form a generally V-shaped region on which the toric insert is located, the generally V-shaped region contacting the toric insert at two different contact points, lines or areas; fixing the toric insert without an orientation mark to the orientation mark fixture; forming an orientation mark on the toric insert fixed to the orientation mark fixture; using the toric insert with the orientation mark to form a toric contact lens mold section; and using the toric contact lens mold section to form a toric contact lens.

A lifting and support device comprises a first yoke having a first support arm that defining a first wedge slot above the first support arm and a second yoke pivotally coupled to the first yoke having a second support arm inwardly extending toward and laterally spaced from the first support arm and defining a second wedge slot above the second support arm. The first and second wedge slots are substantially aligned when the first and second yokes are in a closed position. A wedge is configured for insertion within the first and second wedge slots when the first and second wedge slots are substantially aligned to hold a structure between the wedge and the first and second support arms of the first and second yokes in order to support a structure relative to the lifting and support device.

A die holder device includes a die holder that has an axial centre line and is adapted to receive a clamp die. The die holder is included in a clamp arm or slide block. The die holder is restricted from axial movement by at least a first complete or partial conical surface and possibly by a second complete or partial conical surface that directly or indirectly bears against the clamp arm or the slide block.

A lifting and support device comprises a first yoke having a first support arm that defining a first wedge slot above the first support arm and a second yoke pivotally coupled to the first yoke having a second support arm inwardly extending toward and laterally spaced from the first support arm and defining a second wedge slot above the second support arm. The first and second wedge slots are substantially aligned when the first and second yokes are in a closed position. A wedge is configured for insertion within the first and second wedge slots when the first and second wedge slots are substantially aligned to hold a structure between the wedge and the first and second support arms of the first and second yokes in order to support a structure relative to the lifting and support device.

A holding apparatus for holding a workpiece, which has a round and/or tubular cross section and is to be machined, in such a way that, in the held state, the workpiece can be rotated in relation to the holding apparatus, having at least two clamping arms, which are mounted in a pivotable manner on a base part and by means of which a clamping force can be exerted onto the workpiece, and having an adjustment mechanism for the clamping arms. Provision is made for the adjustment mechanism to have at least two drivers which are guided in a straight line, it being possible for the clamping arms to be pivoted or the clamping arms being pivoted toward one another by virtue of the movement of the drivers, wherein the drivers are arranged in a manner situated one behind the other as seen transversely in relation to the direction of movement of the drivers. In addition or as an alternative, provision is made for the adjustment mechanism to have a threaded spindle which can be manually operated and/or can be operated by an auxiliary force and which is in detachable threaded engagement with a threaded part, wherein the threaded part is, in the axial direction of the threaded spindle, held fixed in position in relation to the base part on a component of the holding apparatus, in particular on the base part. The invention further comprises an apparatus for machining a workpiece which has a round and/or tubular cross section, the apparatus containing a holding apparatus for the workpiece.

An orthopedic instrument for securing a bone includes a base plate, a cutting block removably coupled with an end of said base plate, and a V-shaped vice member slidingly coupled with the base plate and movable toward and away from the cutting block. The cutting block has a plurality of cutting slots, each of which has a predefined configuration. Further, the vice member is configured for centering the bone and applying a force against the bone toward the cutting block.