Disassembly fixturing

As the final part of the repair proeess, the expander underwent a trial assembly at the repair faeility. The aetual job assembly and disassembly fixtures were used during the trial assembly. No signi-fieant problems were eneountered and internal elearanees were to speeifieations. As the assembly bed plate at the repair faeility did not exaetly duplieate the user s baseplate, there was some eoneern that readjustment would be required in the field to obtain elearanees. To faeilitate the field assembly proeess, appropriate pins and fixtures were manufaetured to hold axial and eoneentrie positions of the diffuser and stator as they were in die repair shop. The entire expander trial assembly was eompleted one mondi ahead of sehedule. 

All fixtures and tooling for assembly and disassembly shall be ineluded in the seope of supply. 

When special tools and fixtures are required to disassemble, assemble, or maintain the imit, they shall be included in the quotation and furnished as part of the initial supply of the machine. For multiple unit installations, the requirements for quantities of special tools and fixtures shall be mutually agreed upon by the pnrchaser and the vendor. These or similar special tools shall be nsed during shop assembly and post-test disassembly of the eqnipment. 

After several days to 2 weeks at the elevated cure temperature, the propellant has been converted to a macroscopically homogeneous mass by mutual diffusion of nitrocellulose and plasticizers. The propellant charge is then permitted to cool to room temperature, casting fixtures are disassembled, cores are extracted, and finally the propellant end surfaces are machined to conform to required dimensions. 

This constant-strain apparatus was constructed in a manner similar to that described by Telinde [ ]. To minimize differential contraction effects, the aluminum beam and the side supports were all cut from the same 2024-T3 aluminum plate with the same orientation. The fixture is shown disassembled in Fig. 6 and assembled in Fig. 7. 

Tools, fixtures, and other related hardware Assembly/disassembly Material handling system Human workers Computer systems... 

Boks, C.B. and Tempelman, E. (1997) Delphi Study on fixture disassembly and recycling technology for the electronics and automotive Industries. Internal document code K370, Faculty of Industrial Design Engineering, Delft University of Technology. 

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