• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
[4]

Lathe Safety System

January Project of the Month [3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

rwm

Active User
H-M Supporter-Premium Member
Joined
Mar 25, 2013
Messages
1,109
Likes
1,269
#1
I think it is time to reveal my idea for a new lathe safety system. The idea is to prevent accidental contact or "crashes" between the tooling and the chuck. These events frequently damage the chuck and require regrinding or replacement of the tooling.

The system works like this. I have designed a sensor that attaches to the tool and monitors for contact with the chuThere is a control and switching module associated with the chuck. This module receives input from the tool sensor and triggers the safety system

Attached to the spindle is a shaped charge of C4 as shown. The geometry is designed to pyrotechnically sever the spindle in case of an incident.

A similar amount of C4 is mounted on the motor:
This image shows an overview of the hardware:
In case of a crash the shaped charge from the plastic explosive will sever the chuck from the spindle and/or disable the motor preventing operator injury and tool damage. This will undoubtedly save time and money on replacement tooling as well reducing work-site related injuries.
Any constructive comments regarding this design are welcome!

Robert
 

uncle harry

Active User
Active Member
Joined
Aug 19, 2013
Messages
664
Likes
389
#3
I think it is time to reveal my idea for a new lathe safety system. The idea is to prevent accidental contact or "crashes" between the tooling and the chuck. These events frequently damage the chuck and require regrinding or replacement of the tooling.

The system works like this. I have designed a sensor that attaches to the tool and monitors for contact with the chuck:

There is a control and switching module associated with the chuck. This module receives input from the tool sensor and triggers the safety system

Attached to the spindle is a shaped charge of C4 as shown. The geometry is designed to pyrotechnically sever the spindle in case of an incident.

A similar amount of C4 is mounted on the motor:
This image shows an overview of the hardware:
In case of a crash the shaped charge from the plastic explosive will sever the chuck from the spindle and/or disable the motor preventing operator injury and tool damage. This will undoubtedly save time and money on replacement tooling as well reducing work-site related injuries.
Any constructive comments regarding this design are welcome!

Robert
Why didn't I think of that ?!! Seems quite "safe" to me.
 

T Bredehoft

Active User
H-M Supporter-Premium Member
Joined
Dec 27, 2014
Messages
2,256
Likes
1,644
#5
Speaking of Safety, there ought to be covers on the electronic components, to keep chips from shorting them out and disablilng them.
 

gr8legs

Active User
H-M Supporter-Premium Member
Joined
Oct 31, 2014
Messages
219
Likes
309
#10
Very impressive.

You have invented essentially the same safety system incorporated into the "SawStop" table saw.

Of course when yours is triggered it is much more interesting for spectators and only slightly more expensive to replace the parts.

Congratulations. Well done!

Stu

'When the world is made to be idiot-proof, the world will become overpopulated with idiots.' -Mark Twain?
 

MrFixIt

H-M Supporter - Premium Member
H-M Supporter-Premium Member
Joined
Jul 11, 2015
Messages
157
Likes
77
#13
There's nothing there? Pictures are missing in action.
Musta got blowed up!
 
[6]
[5] [7]