I am planning on building a two-piece gear, and I'm looking for some alternative methods for attaching the two pieces.
This is a rack gear / pinion from an old Hendey lathe. The original Hendey parts are cut from a single piece of ductile iron (right in pic). The damaged one on my lathe (left) looks non-original, it has been made from two pieces, a disc about 4-1/2" OD, pressed onto a rod, about 1-1/4" OD. The two pieces are secured by three pins (set screws?) installed axially.
I plan to machine a replacement gear, and I'm planning on using a two-piece construction with 4140HT. My question is, are the three axial set screws the best method of securing these two pieces? Are there any other alternatives I should consider? Obviously one-piece would be ideal, but that's expensive and I already have an appropriately sized disc and rod in my scrap bin.
This is a rack gear / pinion from an old Hendey lathe. The original Hendey parts are cut from a single piece of ductile iron (right in pic). The damaged one on my lathe (left) looks non-original, it has been made from two pieces, a disc about 4-1/2" OD, pressed onto a rod, about 1-1/4" OD. The two pieces are secured by three pins (set screws?) installed axially.
I plan to machine a replacement gear, and I'm planning on using a two-piece construction with 4140HT. My question is, are the three axial set screws the best method of securing these two pieces? Are there any other alternatives I should consider? Obviously one-piece would be ideal, but that's expensive and I already have an appropriately sized disc and rod in my scrap bin.