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Type: Posts; User: jboggs

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1. ## Thread: Precise rotation of a turntable

by jboggs
Replies
6
Views
91

### Back in the day engineers used mechanical...

Back in the day engineers used mechanical indexers to drive dial indexing tables for all kinds of automated assembly processes. I used Camco indexers on several successful projects. Like these:...
2. ## Thread: Calculations needed - Determine thickness of angle iron to use

by jboggs
Replies
6
Views
111

### I have no idea of the loads you are dealing with...

I have no idea of the loads you are dealing with or the precision with which these carriages must move. Are the carts rolling on the floor now with no damage? If so, great! No need to over-think...
3. ## Thread: Calculations needed - Determine thickness of angle iron to use

by jboggs
Replies
6
Views
111

### Have you sized the wheels? If so, contact the...

Have you sized the wheels? If so, contact the manufacturer's application engineer and get their recommendation on angle size etc. I would say as long as its fully supported on concrete over its...
4. ## Thread: Calculations needed - Determine thickness of angle iron to use

by jboggs
Replies
6
Views
111

### A few tips: 1 - You said the rails are fully...

A few tips:
1 - You said the rails are fully supported on a concrete floor, so I don't see where a bending analysis is even required.

2 - The bending diagram you referenced is for a beam...
5. ## Thread: Understanding 'simple' splines - help!

by jboggs
Replies
19
Views
387

### Well sorry, but the phrase "looking for an...

Well sorry, but the phrase "looking for an element of patentable novelty" does seem to infer that one is desiring to achieve a patent. I'm trying to understand why one would intentionally not use a...
6. ## Thread: Understanding 'simple' splines - help!

by jboggs
Replies
19
Views
387

### No need to remove yourself. Hang around. There...

No need to remove yourself. Hang around. There is always more to learn.
7. ## Thread: Understanding 'simple' splines - help!

by jboggs
Replies
19
Views
387

### What he said!

What he said!
8. ## Thread: Understanding 'simple' splines - help!

by jboggs
Replies
19
Views
387

In a way you just answered some of your own questions. You said the instrument displays "Nm". That is a different animal than "N". One is a unit of force. The other a unit of torque. And there...
9. ## Thread: Understanding 'simple' splines - help!

by jboggs
Replies
19
Views
387

### A force of 7N applied at the center is simply a...

A force of 7N applied at the center is simply a force of 7N. Force has a linear direction and a single location. A rotary force is a torque. And torque is always expressed in terms of force @...
10. ## Thread: Understanding 'simple' splines - help!

by jboggs
Replies
19
Views
387

### The key to failure analysis is to identify the...

The key to failure analysis is to identify the very FIRST point of failure, the initial crack, and why it failed AT THAT POINT. Many times we find a "stress concentrator" at that point, usually in...
11. ## Thread: How to manufacture waterfall faucet?

by jboggs
Replies
2
Views
1,516

### I don't understand your question - "How to...

I don't understand your question - "How to machine it?".

Are you saying you don't understand the machining steps involved to create the various parts? If that is the case then get advice from a...
12. ## Thread: Removing inside weld line of a pipe

by jboggs
Replies
9
Views
2,393

### "I'm not sure whether I would get a smooth and...

"I'm not sure whether I would get a smooth and accurate surface from a tube with an inside weld seam".

"ID of pipe smaller than required on build then drill/ream...
13. ## Thread: Removing inside weld line of a pipe

by jboggs
Replies
9
Views
2,393

### Have you built prototypes? Did they work well? ...

Have you built prototypes? Did they work well? Go from there, one step at a time.

I doubt that this is the place to get all your engineering and process information for the successful...
14. ## Thread: Removing inside weld line of a pipe

by jboggs
Replies
9
Views
2,393

### When I read the word "piston" I assume some fluid...

When I read the word "piston" I assume some fluid or air will be involved. I also assume you will want the piston to seal against the walls of the cylinder and not leak as it moves. If that is...
15. ## Thread: Pivoting Cantilevered Worktable Support Material

by jboggs
Replies
9
Views
2,729

### You said you calculated the moment created by a...

You said you calculated the moment created by a 500# load at the corner 40" from the center (1667 ft-lb) but didn't know what to do with it. Well, first thing, it's "ft-lb", not "lb/ft". There's a...
16. ## Thread: Hydraulic balancing control for two cylinders

by jboggs
Replies
3
Views
3,234

### Well you're in the right neighborhood, but wrong...

Well you're in the right neighborhood, but wrong address I think. The ONLY review on that item is not pretty. The product itself might be fine but there are no guiding instructions etc to help a...

by jboggs
Replies
3
Views
3,208

### Homework question?

Homework question?
18. ## Thread: Hydraulic balancing control for two cylinders

by jboggs
Replies
3
Views
3,234

### You are looking for a flow divider. There are two...

You are looking for a flow divider. There are two types that I know of: proportional and gear or rotary. My experience with the proportional types has not been good. (They were probably...

by jboggs
Replies
2
Views
2,071

Homework?

by jboggs
Replies
9
Views
1,077

Kelly,
Agreed.
Joe
21. ## Thread: True Position of ZERO

by jboggs
Replies
9
Views
1,077

### Drawing standards are great, and valuable, but if...

Drawing standards are great, and valuable, but if they are not clearly understood by both the creator and the user unfortunately they can be just another source of confusion. I don't know the...
22. ## Thread: True Position of ZERO

by jboggs
Replies
9
Views
1,077

### I don't understand what "true position of zero"...

I don't understand what "true position of zero" means. Can you post an example?
23. ## Thread: Steering Subassembly Sanity Check

by jboggs
Replies
3
Views
409

### My comments are based on assumptions I'm making...

My comments are based on assumptions I'm making on from the very limited view of your design that you have provided.

Your shaft support should be rigid enough to absorb the side or bending loads...
24. ## Thread: Steering Subassembly Sanity Check

by jboggs
Replies
3
Views
409

### The shaft supports you're using are not designed...

The shaft supports you're using are not designed for a thrust load. In fact I don't think their surfaces supporting your thrust bearing are even truly perpendicular to the shaft. Plus they are...
25. ## Thread: Clutch' Use in this Gearbox

by jboggs
Replies
9
Views
472

### Three questions: (1) As Hudson pointed out, one...

Three questions: (1) As Hudson pointed out, one would expect to see the clutch on the high-speed, low-torque input shaft. Why isn't it there?
(2) Normally gears in a reducer like this operate in...
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