Abstract: A method is provided for correcting excessive lateral force variations in a pneumatic tire. The method includes the steps of indexing the tire tread into a series of circumferential increments; and obtaining a series of lateral force measurements corresponding to this series of circumferential increments. The maximum value max(1) of the lateral force measurements in a first direction and the maximum value max(2) of the lateral force measurements in a second opposite direction are then determined. This determination is followed by a comparison of each of the lateral force measurements with the max(2) value to determine if it exceeds an acceptable deviation and an independent comparison of each of the lateral force measurements with the max(1) value to determine if it exceeds the acceptable deviation. The acceptable deviation may be a preset constant value.

Abstract: A lens polisher intended to polish a glass lens is provided with a spindle assembly having a spindle body, a housing secured to the spindle body, a load cell for monitoring the pressure applied to the lens, and a rotary head rotatably mounted on the housing. The spindle assembly further has an electric magnet secured to the load cell, at least one plate spring resiliently carried by the rotary head, a permanent magnet secured to the plate spring so as to be opposed to and spaced from the electric magnet, and an abrasive tool secured to the plate spring to polish the lens. A control unit is electrically coupled with the electric magnet and the load cell to control the voltage applied to the electric magnet in response to a signal sent from the load cell.

Abstract: A method and device for honing a workpiece surface to be machined to provide a finished size and surface configuration comprising a honing tool with adjustable honing elements, the elements having a cutting zone and a calibrating zone, and also comprising a guide element with a surface sized to the finished size of the workpiece surface such that on the cutting stroke of the tool the cutting zone performs the cut and the tool is guided by the movement of the calibrated zone through the guide element and the honed surface.

Abstract: A tool that enables resurfacing of exhaust port flanges in the substantial absence of engine disassembly. An air motor that controls rotation of a resurfacing device is carried at the end of an arm assembly including an elbow like joint so that the motor is positionable over a wide range of positions. The proximal end of the arm assembly is mounted on a shaft and an adjustment knob enables the position of the arm assembly and hence the motor to be axially adjusted to facilitate positioning of the motor with respect to the port to be resurfaced. The shaft has a first part with a flat bottom that overlies a base plate that is secured to a cylinder head and spaced from the head by elongate spacers. Fine adjustment of the motor's position is achieved by rocking a preselected end of the shaft away from the base plate and by tilting the shaft laterally with respect to the base plate.

Abstract: An apparatus and method for forming a cavity in a rigid, organic plastic body comprises an abrading tool mounted on a carrier, an air spindle for imparting a rotary motion to the tool, and a second air spindle on which the tool carrier is mounted and which has a force applied to it to move the tool through an arc that passes through the plastic body.

Abstract: An apparatus for grinding annular workpieces has a predetermined number of grinding stations including an upstream station and a downstream station, the stations are spaced a predetermined distance from one another along a straight path, a holder at each of the stations for gripping and rotating the workpieces, a tool at each of the stations for grinding the respective workpiece held by the respective holder, and an input device adjacent the upstream station for feeding workpieces sequentially to the apparatus and an output device adjacent the downstream station for receiving workpieces from the downstream station. An elongated transport bar has the predetermined number of laterally and generally upwardly open seats including an upstream seat and a downstream seat with the seats spaced longitudinally apart on the bar by the predetermined distance.

Abstract: A method is provided for tipping the leading edge of teeth on a thread cutting tool with wear resistant material, without altering the basic size and shape of the tool, and without having to alter the way in which the teeth are cut. A plurality of veins of wear resistant material are hardened in slots in the tool body before axial flutes are cut into the tool body. When the flutes are cut, one side of the veins is exposed, and when the teeth are cut, they are thereby armored by the remainder of the exposed veins.

Abstract: An amplitude control unit for an ultrasonic machine comprises a load detector for detecting the load applied to the tip of a tool during ultrasonic machining on the work, a load/amplitude conversion circuit for converting the load output detected by the load detector into an amplitude conversion value appropriate for the load at the tip of the tool, an amplitude addition circuit for receiving the amplitude conversion value generated by the load/amplitude conversion circuit and for adding it to a predetermined amplitude value at no load. The vibration of the piezoelectric transducer is changed to correspond to the load applied to the work by sending the new amplitude value generated by the amplitude addition circuit to the high frequency oscillator.