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- Dec 18, 2019
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- 6,478
Need to broach some 5mm key ways in some 14mm bore aluminum pulleys for my Teensy powered electronic lead screw project. Tried holding the pulley in a lathe chuck to manually broach, but the pulley kept popping out of the chuck. The thin steel edges of the timing pulleys are not easy to grip. Manual broaching isn't easy on a lathe due to the limited mechanical advantage and it is hard to get the correct widths.
However, this year, I have a 3T arbor press. Can a 3 ton cut the key way for me? I don't have any broaches, but I could buy a small kit, if it would do the job. Is a 3 ton adequate for this? (5mm broach in a 14mm bore). If it is easy, that would be good to know. Likewise if you know it would be difficult, please tell me. I presume as the broach width goes up the force required increases. Likewise if the material is steel, it probably requires more force. If it is effectively impossible with a 3 ton, I will have to find another approach - maybe finding someone to do it. Thanks.
However, this year, I have a 3T arbor press. Can a 3 ton cut the key way for me? I don't have any broaches, but I could buy a small kit, if it would do the job. Is a 3 ton adequate for this? (5mm broach in a 14mm bore). If it is easy, that would be good to know. Likewise if you know it would be difficult, please tell me. I presume as the broach width goes up the force required increases. Likewise if the material is steel, it probably requires more force. If it is effectively impossible with a 3 ton, I will have to find another approach - maybe finding someone to do it. Thanks.
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