[4]

Another "What Is It?" Bridgeport Accessory?

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

Ironside

H-M Supporter - Silver Member
H-M Supporter - Silver Member ($10)
Joined
Aug 9, 2017
Messages
28
Likes
38
#1
I got this in a mixed lot of Bridgeport stuff. It's about 16" long overall. The bore is pretty much the exact size as a Bridgeport J Head spindle. The mechanism attached to the bracket can slide and lock at any point in the slot. As you rotate the knurled part the shaft extends or retracts. I 100_3950.JPG 100_3951.JPG 100_3952.JPG 100_3953.JPG Thanks in advance for any input.
 

BROCKWOOD

H-M Supporter - Gold Member
H-M Supporter - Gold Member ($25)
Joined
May 26, 2017
Messages
328
Likes
208
#2
I'd use it to zero in the head after angular usage. Looks like a fun thing to make for my mill!
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
2,311
Likes
1,754
#3
I had a similar device for a Bridgeport "M" head, it is a tracer to do 3 dimensional work; the adjustable tracer finger rubs against a positive and the ball end mill cuts the same form in the workpiece.
 
C

cg285

Guest - Please Register!
Guest - Please Register!
#4
i'd like to see that in action. looks like it would take 3 hands

trace piece looks similar to an automotive boring bar mic
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
2,311
Likes
1,754
#5
All it took was downward pressure on the spindle, follow a line of cut, step over, repeat. On the one that I had, the center distance between the spindle housing and the follower was adjustable, I don't think it was more than about 10" or 12" long overall.
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
2,311
Likes
1,754
#6
The trace piece would be the same radius as the ball end mill being used; on mine, the tracer was removable so different sizes could be used.
 

Silverbullet

Gold
Registered
Joined
May 4, 2015
Messages
3,404
Likes
1,652
#7
It's the stylus for tracing on a mill or router tracer machine. It would have a special free float air or hydraulic table or head.
 

chips&more

Active User
Registered
Joined
Mar 19, 2014
Messages
2,426
Likes
1,745
#8
Yes, I have I one those. Bridgeport called it a “Profiling Attachment”. They had two versions. Part #PM-1 was for the M head. And Part #PJ-1 was for the J head. And sorry or hopefully you have the spring attachment that goes with yours?
profiling.jpg
 
Last edited:

Ironside

H-M Supporter - Silver Member
H-M Supporter - Silver Member ($10)
Joined
Aug 9, 2017
Messages
28
Likes
38
#9
Thanks, you guys are awesome. It makes sense now. You can see where it is able to accept different type profile tips. And nope, this is the only part that I have. I can look through the box of stuff that came with the lot, but I don't remember seeing a spring attachment.
 

benmychree

John York
H-M Supporter - Gold Member ($25)
Joined
Jun 7, 2013
Messages
2,311
Likes
1,754
#10
Yes, I have I one those. Bridgeport called it a “Profiling Attachment”. They had two versions. Part #PM-1 was for the M head. And Part #PJ-1 was for the J head. And sorry or hopefully you have the spring attachment that goes with yours?
View attachment 261170
I remember now, that the spring part of the attachment was mounted on the bolts that the head swiveled on.
 
[6]
[5] [7]
Top