公开(公告)号：EP0777601A1

公开(公告)日：1997-06-11

申请号：EP95933711.0

申请日：1995-08-09

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： REINFELDER, William, C. ,  LEAHY, Kevin, P. ,  JONES, Corey, D. ,  KOVALSKY, David, A.

IPC: B64C27 ,  G01M1

CPC classification number: B64C27/008 ,  G01M1/12

Abstract: The rotor blades of a helicopter are balanced both in the chordal direction and in the spanwise direction in a static balancing assembly. The assembly includes a support surface (4) on which there are four weighing scales (8). The scales (8) are positioned in close proximity with the four corners of the rotor blade (2). The scales (8) provide four cooperating pairs of blade spanwise and chordwise balancing reference data. The scales (8) are operably connected to a microprocessor which is preprogrammed with desired balance data for the blades being tested. Deviations from the desired balance data detected by the scales and the microprocessor are corrected by selectively adding or subtracting weight on the blades at appropriate locations of the surfaces thereof.

公开(公告)号：EP0771283A1

公开(公告)日：1997-05-07

申请号：EP95923998.0

申请日：1995-06-20

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： SUCIC, Steve ,  JONES, Corey, D.

IPC: B64C27 ,  B23Q35 ,  B25H7 ,  B64F5

CPC classification number: B64C27/473 ,  B23Q35/102 ,  B64C2027/4736 ,  Y10T29/49332 ,  Y10T83/0341 ,  Y10T83/0363

Abstract: The described embodiment of an edge-of-part (EOP) scribe device (10) is operative to simultaneously scribe trim lines in an oversized, cured leading-edge sheath (120) mounted on a sheath mold assembly (160) so that the scribed, cured leading-edge sheath may be cut along the scribed trim lines to form a prefabricated leading-edge sheath having finished edges for a helicopter main rotor blade (100). Trim line templates (168) having profile edges (170) defining the profiles of the finished edges of the prefabricated leading-edge sheath are affixed to the sheath mold assembly. The EOP scribe device includes a primary carriage assembly (12) having V-groove rollers (14) secured thereto wherein the primary carriage assembly is translatable in a spanwise direction along side rails (166) secured to the sheath mold assembly, handles (16) for mounting and dismounting the EOP scribe (10) device in combination with the sheath mold assembly, opposed pairs of guide rails (18) affixed to the primary carriage assembly, and a secondary carriage assembly (20) mounted in movable combination with each pair of guide rails. Each secondary carriage assembly includes a spring-loaded scribe head (22) mounted in movable combination therewith, a positioning knob (24) secured in rigid combination with the scribe head and operative to allow the scribe head to be moved between a disengaged position for mounting/dismounting of the EOP scribe device and a scribe position for inscribing a trim line in the cured leading-edge sheath, a rigid follower linkage (26) secured to the secondary carriage assembly, and a follower slide roller (26) mounted in rotatable combination with the rigid follower linkage. The spring-loaded scribe head (22) includes a hardened scriber (30) for scribing the trim line and a tolerance roller (32) that interacts with the cured leading-edge sheath during the scribing operation to define the depth of the scribed trim line. With the EOP scribe device mounted in combination with the sheath mold assembly and the spring-loaded scribe heads in the scribe position, each follower slide roller interacts with the respective profiled edge (170). As the primary carriage assembly is subjected to spanwise translation along the sheath mold assembly, dimensional changes in the profiled edges induce vertical displacements in the follower slide rollers, the induced vertical displacements being coupled through the rigid follower linkages to cause corresponding vertical displacements in the secondary carriage assemblies and concomitantly, in the scribe heads. The vertical displacement of the hardened scribers matches the respective profiled edges such that the scribed trim lines correspond to the profiles of the finished edges of the prefabricated leading-edge sheath.

Abstract translation: 所描述的零件边缘（EOP）划线装置（10）的实施例可操作以同时在装配在护套模具组件（160）上的加大尺寸的，固化的前缘护套（120）中划线修剪线，使得划线 固化的前缘护套可以沿着划线修剪线被切割以形成具有用于直升机主旋翼叶片100的完成边缘的预制前缘护套。 具有限定预制前缘护套的成品边缘的轮廓的轮廓边缘（170）的修剪线模板（168）被固定到护套模具组件。 EOP划线装置包括具有固定在其上的V形槽滚子（14）的主滑架组件（12），其中主滑架组件可沿翼形方向沿着固定到护套模具组件的侧轨（166）平移，手柄（16） 用于安装和拆卸与鞘模组件相结合的EOP划刻器（10），固定在主滑架组件上的相对导轨对（18）以及与每对滑动组件可动组合安装的辅助滑架组件（20） 导轨。 每个辅助滑架组件包括安装成与其活动组合的弹簧加载的划刻头（22），固定为与划刻头刚性结合的定位旋钮（24），其可操作以允许划刻头在用于安装的分离位置 /拆卸EOP划线装置和用于将修剪线刻印在固化的前缘护套中的划线位置，固定到第二滑架组件的刚性从动连杆机构（26）以及以可旋转组合方式安装的从动滑动滚筒（26） 与刚性的跟随者联动。 弹簧加载的划线头（22）包括用于划线修剪线的硬化划线器（30）和在划线操作期间与固化的前缘护套相互作用以限定划线修剪线的深度的公差辊（32） 。 通过将EOP划线装置与护套模具组件以及弹簧加载的划线头结合安装在划线位置，每个从动滑动滚轮与相应的成型边缘（170）相互作用。 当主滑架组件沿着护套模具组件进行翼展方向平移时，成型边缘的尺寸变化引起从动滑动滚筒的垂直位移，诱导竖直位移通过刚性从动连杆机构耦合，以引起辅助滑架中相应的垂直位移 马车组件并伴随在划线头中。 硬化刻划机的垂直位移与相应的成型边缘匹配，使得刻划的修整线对应于预制前缘护套的成品边缘的轮廓。