Abstract: A honing apparatus for producing a precision surface on a workpiece is disclosed. The honing apparatus includes a shank having a first zone positioned at substantially proximity to a distal end of the shank and a second zone positioned at substantially centre of said shank. The first zone has a rough grit diamond than the second zone. The honing apparatus includes a centering section positioned at the distal end of the shank. The shank connects to a honing machine via an adapter. The shank axially advances towards an area on a workpiece to be precision finished, while rotating and reciprocating relative to the workpiece to be precision surfaced. The centering section centers and aligns the shank at the workpiece such that the workpiece comes in contact with the first zone followed by the second zone. The first zone and the second zone remove a stock of material from the workpiece for precision surface on the workpiece.

Abstract: A cylinder block fixture for securing a workpiece is disclosed. The cylinder block fixture includes a base and clamping members. The clamping members are positioned apart at a distance facing each other on the base. Each of the clamping members includes a support plate at one end and a hand wheel at another end. Each of the support plates comprises a shaft, support bars, and support rods facing the opposite clamping member. The support rods extend from the support bars. The shafts at the support plates receive a camshaft housing of a workpiece. The workpiece includes a cylinder block. The support rods secure the workpiece. The hand wheel rotates and causes the workpiece to rotate. The workpiece rotates to align and take reference from a main bore or a pan rail surface of the workpiece to perform machining operations on the workpiece.

Abstract: A resurfacing machine that includes a spindle carrying a resurfacing tool and an electric motor operatively connected to the spindle and configured to rotate the spindle about an axis. The machine includes a control system, such as a processor and a computer readable medium carrying spindle control instructions thereon. The control system is configured to control the operation of the motor in order to rotate the spindle through a repeating acceleration and deceleration cycle during a resurfacing operation.

Abstract: A machine tool includes a driver, a tool holder, and a locking device in the form of, for example, an alignment collar. In use, the machine tool carries a tool, such as a surface refinishing bit, which may be lowered into a workpiece bore, such as a cylinder head valve seat, and subsequently rotated by a machine spindle for resurfacing the bore. The machine tool receives a pilot shaft placed in a reference bore associated with the workpiece bore. The pilot shaft functions to ensure general alignment of the machine tool cutting axis and the refinishing surface.