Abstract: The present invention relates to a control method and a control apparatus for controlling two (two kinds of) driver mechanisms for relatively moving a main spindle along a single axis in an NC machine tool whereby the straightness of the work-piece machined surface can be finished with high accuracy. The control method of the invention controls operations of two driver mechanisms (124,125,126) for relatively moving a main spindle (104) along a single axis in an NC machine tool (100), and one of the driver mechanisms (124 or 125,126) is driven to relatively move the main spindle (104) in a positive direction along the axis during machining, the other driver mechanism (124 or 125,126) is driven to relatively move the main spindle (104) in a negative direction along the axis during machining.

Abstract: The present invention relates to a control method and a control apparatus for controlling two (two kinds of) driver mechanisms for relatively moving a main spindle along a single axis in an NC machine tool whereby the straightness of the work-piece machined surface can be finished with high accuracy. The control method of the invention controls operations of two driver mechanisms (124,125,126) for relatively moving a main spindle (104) along a single axis in an NC machine tool (100), and one of the driver mechanisms (124 or 125,126) is driven to relatively move the main spindle (104) in a positive direction along the axis during machining, the other driver mechanism (124 or 125,126) is driven to relatively move the main spindle (104) in a negative direction along the axis during machining.

Abstract: Fiber waste generated during operation of a circular knitting machine is removed from components of the machine by an air suction/blowing fan motor which causes air currents that conduct the fiber waste to one or more filters. Air suction removes the fiber waste from the filters. An adjustable suction cylinder cooperates with the air suction/blowing fan motor to draw air from below the knitting cylinder through a cooling orifice to simultaneously cool the knitting unit.

Abstract: A vertical shaft of the machine is encircled by a vertically movable sleeve that supports, at its lower end, a dial cam holder having a stepped portion. A needle dial 17 bolted to the undersurface of the sleeve has a recess that closely receives the stepped portion of the sleeve. Vertical movement is imparted to the sleeve and shaft by a gear that encircles the sleeve and has screw threads mating with screw threads upon the upper end section of the sleeve. Such movement provides vertical clearance that facilitates lateral removal and insertion of the needle cylinder into/from the machine. The needle cylinder is releasably secured to the machine's ring gear by plate members that are releasably center.

Abstract: A method of constructing a plated pile knit fabric and sinker therefor is disclosed. The sinker is adapted for low pile formation in the construction of the plating pile knit fabric. Each sinker is obliquely movable from an advanced, lower position to a receded, upper position. A pile position control ledge extends horizontally with respect to the incline of the sinker. The distance between the sinker nose and sinker pile position control ledge is more extended than in a conventional sinker, and as a result, the sinker nose can be positioned lower than that in a conventional sinker so as to form low piles.

Abstract: Conversion of a circular knitting machine having a particular diameter of needle cylinder to a machine having a different diameter of needle cylinder is permitted within a limited range of sizes of needle cylinders. This conversion is made possible by providing a plurality of sets of segmental knitting cam support blocks which may be positioned around needle cylinders of different diameters to reduce the normal number of parts which must be replaced when changing a particular knitting machine from one size needle cylinder to another. The number of yarn feeders associated with each segmental knitting cam support blocks of each set is determined so that the number of yarn feeders supported by each segmental knitting cam support block is equivalent to an integral multiple of one pitch covered by one yarn feeder.

Abstract: The wear life of knitting machine instrumentalities, such as knitting needles, sinkers, or the like, is increased by providing a reinforcing wear-resistant plate member on the operating butt portion thereof to effectively increase the thickness of the operating butt portion. The wear-resistant plate member includes a cam engaging edge extending along the cam engaging edge of the operating butt portion with the cam engaging edge being inclined at an angle corresponding to the inclined angle of the operating cams of the knitting machine which it is adapted to engage. A beveled edge extends along the junction of the cam engaging edge and the face of the adjacent operating butt portion to form a groove defining an oil retaining sump between the plate member and the operating butt portion for temporarily retaining lubricant therein and for providing lubrication between the operating butt portion and the operating cams.