| 摘要 |
911,217. Gear - finishing. NATIONAL BROACH & MACHINE CO. July 29, 1960 [Sept. 14, 1959], No. 26551/60. Class 83 (3). A modification of the gear honing machine claimed in Specification 882,597 comprises a light tool support 54, Fig. 3, angularly adjustable in the tool head 50 about an axis perpendicular to the tool and work axes. The work is clamped by a pneumatically-operated tailstock 24 on a work-support 20 adjustable about a central pivot and supported by bearings 32. The work-support 20 carries an angularlyadjustable slotted bar engaged by a pin 34 on a slide 12 to produce crowning of a gear. The tool T is rotated by a motor 52 carried on the head 50 which is adjustable angularly by gearing 58 on a slide 44 adjustable transversely on the slide 12. The shaft 66, Fig. 5, carrying the tool T, is rotated through a universal coupling 152 in bearings 64 in the light support 54. The support is carried on a shaft 74 axially-movable in an angularly adjustable member 76. The head 50 carries a support 82, Fig. 6, for a slotted block 86 adjustable angularly by gearing 94 against a dial 96. The block 86 can be urged downwardly by a solenoid acting against springs 101. to move it into contact with a follower 116 mounted on the shaft 74. Thus, when the head 54 is moved axially of the shaft 74, by means such as is described in Specification 911,216 to mesh the tool with the work, the block 86 causes angular adjustment of the head. This angular adjustment compensates for wear of the helical teeth of the tool. To lock the head 54 angularly, an air cylinder is actuated to operate toggle linkage 138 and clamp brake arms 120 against a drum 80 on the member 76. When the head is locked, the block 86 is retracted. |
