Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Jboggs

    Need help sourcing a custom-made Buna O-ring.

    To the OP: Just taking a wild guess here - are you an Aerospace Engineer? Only an Aerospace engineer would put that kind of tolerances and G,D,&T on a drawing of a rubber o-ring! 1. Get a copy of the O-Ring bible: The Parker O-Ring Handbook. Has everything you could ever possibly want to...
  2. Jboggs

    Hole size with tolerance for Shaft

    You told us nothing about the application, the precision, the load, any maintenance issues, etc. Don't try to over engineer this thing. If your machinist is experienced, make sure he understands the situation and rely on his judgment. Young engineers can learn a lot from older, experienced...
  3. Jboggs

    Circlip resistance calculation

    Two comments/questions: 1. The Circlips (called retaining rings by us old farts) should see ZERO load from the door! The hinge itself should absorb all that load. Your hinge pin should be designed so that the distance between the clips is slightly longer than the distance from top to bottom...
  4. Jboggs

    rotatign mechanism suggestion

    You must first decide how to support it in the desired orientation. (axis horizontal, vertical, at an angle?) That means identifying the bearing locations. You haven't given us enough information to know where any interferences are, etc. After you have established some way to support it...
  5. Jboggs

    Tapped axial holes on tube

    "thirteen (13) holes 1/2" diameter and threaded" No. He's tapping "1/2-13" holes. 13 threads per inch is the standard pitch for 1/2" threads.
  6. Jboggs

    How to make floating connector design

    Contact an Application Engineer for the Staubli company. Unusual and multiple connectors are their specialty.
  7. Jboggs

    Looking for Help with Air Cylinder Selection for X-Z Slide Configuration

    Air cylinders will only hold two positions - fully retracted or fully extended. That is, unless you have some external break or lock. Then it's not the cylinder doing the "holding". As previously suggested - call SMC and talk to an Application Engineer. Their only job is to help you succeed...
  8. Jboggs

    Added mass to a Hydraulic cylinder

    Most hydraulic cylinder rods have male or female threads for exactly that purpose - attaching something to them. Something tells me though that you want to "attach" something in a more "secure" way - like welding. Do not EVER weld on a hydraulic shaft and expect it to continue to function...
  9. Jboggs

    Hoists attached to another hoist to rotate load

    Use CWB1's suggestion. The system already has all the bugs worked out.
  10. Jboggs

    3D Printing of Functional Aerospace Prototypes?

    I would suggest contacting a local university or technical college. Many of them have some pretty high-end 3D printing equipment. I have quotes from a local source for 3D printed metal components. In our case, casting and machining was less costly, but I can see situations where additive...
  11. Jboggs

    Locking the position while using a linear slide

  12. Jboggs

    Torque wrench limited space

    I see a hydraulic wrench with extended sockets in that application. They can be limited to a max torque.
  13. Jboggs

    Force req'd for connection to fail

    Thanks for the question, but... you aren't going to get an answer without answering more questions. I'll go first: 1. What is PTR? I found this on Google: "Fiberglass-reinforced plastic (Fiberglass PTR)" 2. I would not trust tapped holes in fiberglass or plastic. VERY weak. Find another...
  14. Jboggs

    A modular profile (item) construction - tolerances?

    I bothers me when I hear non-engineers say something like "its got to be parallel". I have to explain there's no such thing as just "parallel". The word requires a measurement. How parallel? But when I hear engineers say that... well... we won't go there. How parallel do you need it? No...
  15. Jboggs

    Hole Wizard - UNC STI Tapped Hole?

    I'm not familiar with the STI thread standard, but SW does offer a few different insert threads in Hole Wizard:
  16. Jboggs

    Hole Design for mating parts.

    You will see that type of pattern on caster wheel mounting plates and other devices. The intent is for the plate to fit two different bolt patterns, one pattern of smaller geometry and smaller bolts as well as another pattern of larger geometry and larger bolts.
  17. Jboggs

    Self-locking taper angle

    A very hard-learned lesson on taper fits: The aspect ratio (length/width) MUST be correct. Some high speed rotating equipment in our plant was designed 30 years ago with rotary unions on each end of a shaft. These unions are changed out on a regular basis. The engineer thought he would...
  18. Jboggs

    Do engineering drawings imply solid and uniform parts?

    Simple answer - yes. If no specifications are given for an inner shape (ID, wall thickness, etc.) then solid is the only other option. Anything else should be considered as "not to print".
  19. Jboggs

    T slotted (or otherwise) framing non-metallic

    My experience from working with t-slotted materials is that in the long run, they just make things more complicated, and actually take more time to complete an assembly. If you have a good drawing and the right tools, standard materials are the way to go. T-slotted structures have their place...
  20. Jboggs

    T slotted (or otherwise) framing non-metallic

    Fiberglass is a non-conductor, and it is available in standard structural shapes. T-slots would not work well in fiberglass, but it is relatively easy to fabricate using standard methods (drilled holes, aluminum fillet plates, fasteners, etc.)...

Part and Inventory Search

Back
Top