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Old 8 Jan 2007, 13:45 (Ref:1809613)   #1
knighty
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Wanted - 6 Degree Taper Mill-cutter For Ball Joints

I am searching for a cutter that can be fitted to a bridgeport type of vertical mill that can cut 6 degree tapered holes in a plate for inserting a ball joint into, the holes must be 12mm deep, and 14mm minimum OD at the top - so a 10mm shank cutter will NOT do the job!........when I say 6 degrees this is the full inclusive angle, half angle is therefore 3 degrees. I have had both a ball joint and existing housing measured at work in an engineering grade inspection department on some pretty 5hit hot gear (CMM and shadow graph), and both measure 5.8 degrees bang on, but I'm assuming only 6 degree cutters will be available???......the ball joints in question are from VW beetle steering rack tie rods.......can anyone point me in the right direction regarding where to get one?......a UK source would be preferable, but anywhere will do I suppose!
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Old 8 Jan 2007, 19:59 (Ref:1809875)   #2
morrisnutter
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At my last job we had to make very precisely tapered holes (usually in acrylic). We just got some reamers and had them ground down (between centres) to the required angle by a competent machine shop! Works like a dream
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Old 8 Jan 2007, 22:46 (Ref:1810017)   #3
Robyn Slater
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You should try someone who does tool and cutter grinding.
Theres a place just up the road from my workshop.
I can get his no. if you like.
Regards,
Robyn
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Old 11 Jan 2007, 15:39 (Ref:1812392)   #4
GordonG
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rose joints

Could you not ditch the (heavy) track rod ends with their tapers and switch to a plain bolt through a rod end? Probably get a better joint at lower weight, and lower cost by the time you've sorted the taper reaming.

Course, I dont know *why* you're asking, so there may be very good reason to stick with the ball joint.

G
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Old 12 Jan 2007, 09:03 (Ref:1813047)   #5
retro_msport
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Quote:
Originally Posted by GordonG
Could you not ditch the (heavy) track rod ends with their tapers and switch to a plain bolt through a rod end? Probably get a better joint at lower weight, and lower cost by the time you've sorted the taper reaming.

Course, I dont know *why* you're asking, so there may be very good reason to stick with the ball joint.

G
Thats what I do when i change the rack height on Escorts, the steering arms are re-made and and the ball joints are replaced with rod ends.. the reason for this.. The taper cutter was too expensive and the Rod Ends came at a cost comparable to Rs2000 TRE's, You can even rubber boot them to stop the MOT'er from having a headfit in the UK
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