#roughcut2022 Making A Universal Chamferring Tool For The Lathe
178.7 هزار بار بازدید -
2 سال پیش
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#roughcut2022This is
#roughcut2022
This is a little toolmaking project I made for the roughcut2022 hashtag on Youtube.
I had some SCGT turning inserts flying around and decided to make a toolholder for them. As the inserts are square they are well suited for a chamferring lathe tool when mounted at 45°.
As I wanted the tool to be able to do both outside and inside chamfers, I designed it with two insert seats. The insert on the front side can do outside left and right chamfers as well as normal facing and turning. The insert on the backside is for inside chamfers. To use it, the tool has to be switched at 90° and mounted parallel to the lathe spindle axis. Due to the new quick change toolpost this is not a problem any longer and super quick to do.
The reason for this odd design ist, that the SCGT inserts have just a 7° relief angle. For internal bore chamfers this is not ideal as on smaller bores the side of the insert would collide with the workpiece instead of cutting. To prevent this, I made the back insert seat for internal chamfers 2mm higher than the front one. With this little trick I got enough clearance so that the insert cuts well. So when the front side of the tool is set on center height, the backside is automatically 2mm heigher to have enough clearance.
There are probably better designs which work with only one insert for everything but I went with this one and time will tell how practical it is.
As I had no proper 45° chamferring tool until now the new one is already extremely useful.
Plans for this tool are available on my Patreon-side:
www.patreon.com/wecandothatbetter
I hope you like my work.
If you have any questions or suggestions, just comment on the video. I try to read and reply soon.
If you like what I'm doing, consider to subscribe to the channel to see more of this content. I'm making improvements and modifications to my Mini Lathe as well as some toolmaking and other machining.
Thank you for watching!
This is a little toolmaking project I made for the roughcut2022 hashtag on Youtube.
I had some SCGT turning inserts flying around and decided to make a toolholder for them. As the inserts are square they are well suited for a chamferring lathe tool when mounted at 45°.
As I wanted the tool to be able to do both outside and inside chamfers, I designed it with two insert seats. The insert on the front side can do outside left and right chamfers as well as normal facing and turning. The insert on the backside is for inside chamfers. To use it, the tool has to be switched at 90° and mounted parallel to the lathe spindle axis. Due to the new quick change toolpost this is not a problem any longer and super quick to do.
The reason for this odd design ist, that the SCGT inserts have just a 7° relief angle. For internal bore chamfers this is not ideal as on smaller bores the side of the insert would collide with the workpiece instead of cutting. To prevent this, I made the back insert seat for internal chamfers 2mm higher than the front one. With this little trick I got enough clearance so that the insert cuts well. So when the front side of the tool is set on center height, the backside is automatically 2mm heigher to have enough clearance.
There are probably better designs which work with only one insert for everything but I went with this one and time will tell how practical it is.
As I had no proper 45° chamferring tool until now the new one is already extremely useful.
Plans for this tool are available on my Patreon-side:
www.patreon.com/wecandothatbetter
I hope you like my work.
If you have any questions or suggestions, just comment on the video. I try to read and reply soon.
If you like what I'm doing, consider to subscribe to the channel to see more of this content. I'm making improvements and modifications to my Mini Lathe as well as some toolmaking and other machining.
Thank you for watching!
2 سال پیش
در تاریخ 1401/07/09 منتشر شده
است.
178,783
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