摘要:
A worm-shape or screw-shape hone, for honing gear teeth, has the tooth profile of the basic rack at its normal plane. The hone is formed by molding synthetic polymers in which there are dispersed abrasive particles, to provide a Shore hardness of 15* - 75* and a Young''s modulus 0.5 - 70 X 103 kg/cm2. The hone is engaged with the gear to be finished and is rotated by a motor with the hone driving the gear. During honing of the gear, the hone is fed parallel to the axis or tooth trace of the gear over the whole face width of the gear. The polymer material may comprise a cocured blend of polyurethane rubber and epoxy resin having a suitable flexibility, good resiliency and high abrasion resistance, and the abrasive particles may comprise Alundum or Carborundum, the abrasive particles being exposed at the working surface of the hone.
摘要:
A tool which can be used for gear manufacturing machining of a workpiece may be dressed on a dressing machine, and the dressing may take place with line contact between the dresser and the tool. A specific modification of the surface geometry of the tool is produced by the suitable selection of the position of the dresser with respect to the tool during dressing. The specific modification of the surface geometry of the workpiece is specifiable with regard to various parameters.
摘要:
A method for hard fine machining of a workpiece with a worm-shaped cutting tool, wherein the workpiece has a profiling along its circumference. The cutting tool has a machining surface. A hard machining process of the profiling is carried out at simultaneous synchronized rotation of the workpiece around its axis and of the cutting tool around its axis with given meshing of the machining surface into the profiling by moving the cutting tool in the direction of the axis of the cutting tool. A shift movement is superposed to the cutting tool in the direction of the axis of the cutting tool during the hard machining. The shift movement includes at least one first section at which the cutting tool is moved in one of its axial directions and of at least one second section at which the cutting tool is moved in the other of its axial directions.
摘要:
Apparatus for the manufacture or working of the tooth system of straight or helically toothed, externally or internally toothed gears with a hyperboloidally or globoidally or similarly formed toothed tool, which has an abrasive surface or the like, wherein a crossed-axes angle is provided. The intermeshed workpiece-tool is guided by a pair of guide wheels. The working takes place on only one flank of a tooth. The workpiece or tool spindle is coupled with a reversible motor. A brake is provided on one of the spindles. A shiftable coupling and additional brakes or centrifugal masses can furthermore be provided.
摘要:
Apparatus for the manufacture or working of the tooth system of straight or helically toothed, externally or internally toothed gears with a hyperboloidally or globoidally or similarly formed toothed tool, which has an abrasive surface or the like, wherein a crossed-axes angle is provided. The intermeshed workpiece-tool is guided by a pair of guide wheels. The working takes place on only one flank of a tooth. The workpiece or tool spindle is coupled with a reversible motor. A brake is provided on one of the spindles. A shiftable coupling and additional brakes or centrifugal masses can furthermore be provided.
摘要:
In a process for machining a spur gear by using a grinding worm having a curved tooth thickness smaller than the final measurement of the curved tooth gap of the spur gear to be produced, the grinding worm is first directed radially towards the spur gear until the desired distance between the axes is reached. Subsequently, a relative circular feed movement is carried out consisting of a positive or negative additional rotating movement of the gear or the worm. This additional rotating movement is superimposed on the corresponding basic revolution of the gear or the worm. In this way, first one flank and subsequently the other flank of each gear tooth is machined to its final dimension. With this process, a full linear contact exists between the grinding worm and the tooth flank of the gear during roughing independent of the amount of material to be machined. Due to the existing play, an effective cooling is possible so that high grinding outputs can be achieved.
摘要:
In a process for machining a spur gear by using a grinding worm having a curved tooth thickness smaller than the final measurement of the curved tooth gap of the spur gear to be produced, the grinding worm is first directed radially towards the spur gear until the desired distance between the axes is reached. Subsequently, a relative circular feed movement is carried out consisting of a positive or negative additional rotating movement of the gear or the worm. This additional rotating movement is superimposed on the corresponding basic revolution of the gear or the worm. In this way, first one flank and subsequently the other flank of each gear tooth is machined to its final dimension. With this process, a full linear contact exists between the grinding worm and the tooth flank of the gear during roughing independent of the amount of material to be machined. Due to the existing play, an effective cooling is possible so that high grinding outputs can be achieved.
摘要:
A method for hard fine machining of a workpiece with a worm-shaped cutting tool, wherein the workpiece has a profiling along its circumference. The cutting tool has a machining surface. A hard machining process of the profiling is carried out at simultaneous synchronized rotation of the workpiece around its axis and of the cutting tool around its axis with given meshing of the machining surface into the profiling by moving the cutting tool in the direction of the axis of the cutting tool. A shift movement is superposed to the cutting tool in the direction of the axis of the cutting tool during the hard machining. The shift movement includes at least one first section at which the cutting tool is moved in one of its axial directions and of at least one second section at which the cutting tool is moved in the other of its axial directions.
摘要:
Two simultaneously driven worm shaped globoidal tools of identical shape are radially adjustable towards the workpiece having tooth profiles. Their tooth thicknesses are smaller than the tooth gap widths of the finished tooth gaps on the workpiece. The workpiece is supported in a freely rotating manner. One tool is angularly displaced with respect to the other tool with a controlled speed and amount of the angular displacement forcing one tool into contact with only the left side of a tooth profile and the other tool into contact with the right side of a tooth profile. During the angular displacement, the left and right tooth sides are processed simultaneously.