Abstract: A method and apparatus for controlling the infeed of a grinding machine senses the interface force between a grinding wheel and a workpiece to control infeed for grinding a workpiece with diverse grindability characteristics. The infeed is increased in response to an increase in the sensed force until the interface force reaches a predetermined level; while the interface force is decreased to a predetermined level in response to a decrease in the sensed force.

Abstract: A tool for deburring or finishing a workpiece is mounted for common reciprocatory movement with the wheelhead of a grinding machine. The tool, which is form of an elongated rod, is supported in a housing which is in turn pivoted about an axis transverse to the tool. A biasing means urges the tool toward a predetermined angular position about the pivotal axis of a housing. The tool cooperates with a workpiece to selectively overcome the bias and oscillate the tool in accordance with the relative reciprocatory movement between the grinding wheel and the workpiece.

Abstract: Grinding machine with a provision for setting up grinding cycle parameters and then locking them in the selected condition so that they are not accessible to the normal operator. The control is provided with lamps to indicate machine events and event failure.

Abstract: A multimodal cycle for a grinding machine is modified as the function of the grinding force and the mode of operation. The grinding force is monitored by measuring the electrical load value upon the grinding wheel motor during operating conditions and biasing this value by a stored value representative of the nongrinding idle load. The idle load bias is updated with each grinding cycle and the grinding force signal is used to control a variety of machine operations. If the grinding force signal exceeds a predetermined threshold during an early portion of the grinding cycle, the wheelhead advancement is terminated; while the same situation in a later portion of the cycle permits continued wheelhead advancement but at a reduced rate. The grinding force signal is also used to count parts and detect part absence. It is further used to regulate rough and finished spark-outs as well as a peak load limit for the grinding cycle.

Abstract: Grinding machine for a workpiece having a reference surface that cannot be used for mounting the workpiece for grinding and, yet, must be located near the abrasive wheel to permit accurate grinding of surfaces relative to the reference surface; the machine includes a chuck adapted to mate with a locating surface in a workhead and to mate with a similar locating surface in a mounting means, the mounting means including a clamp for engaging the reference surface on the workpiece and holding it in a fixed predetermined relationship to the locating surface on the chuck.

Abstract: A grinding machine in which the grinding cycle is controlled by a stepping motor which receives pulses from a linear feed-controlled generator and which is operative to give an adjustable diamond clearance.

Abstract: A machine tool having an electrical means for producing a non-cylindrical surface of revolution.

Abstract: A machine tool including a hard brittle tool having a cutting edge and a means for heating the tool adjacent the cutting edge.

Abstract: A machine tool having relatively rotatable elements joined by a toothed coupling.

Abstract: This invention relates to a grinding machine, and more particularly, to a machine for forming annular surfaces of revolution of irregular form.

Abstract: A pulley whose outer surface is in the form of three tapered portions selected for use with a flat belt.

Abstract: A toolhead having a spindle mounted in axially spaced bearings wherein one of the bearings is allowed to slide axially during dynamic effects on the bearings or thermal expansion and contraction of the spindle, the axial movement being made possible by the provision of rows of barrel-shaped rollers.