Manufacturing Drawing for a Barbell
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New Product Development & Design, Mechanical Design Engineering, 3D Printing, Prototype
Bangalore
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Kingston
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Description
Experience Level: Intermediate
Industry: Sports and Fitness
Design details: Hello,
I'm looking to manufacture a weight lifting barbell to use with rubber resistance bands instead of weight plates. I need to get some manufacturing drawings created with dimensions & details, as well as 3D models.
I have attached a PDF file showing some sketches of how I think the bar might work, as well as an image of an existing competitor's product.
Ideally, the bar needs to be capable of holding up to 500lbs (250lbs per side), but if the design doesn't allow this a lower amount would be acceptable.
The resistance bands used with the bar are solid loops (picture of one attached), which would slide onto the hanger at each end, and then be anchored at a point in the middle (not part of this design). The resistance bands are up to 90mm in width.
The hangers at each end would be bent so that the resistance band is secured in place and doesn't come off during the workout.
The hangers would attach to a central bar, which would have threaded holes in each end to accept the threaded parts of the hangers. The outer ends of the central bar would also be threaded to accept an end cap. The purpose of the end caps would be to hold the outer sleeve in the middle in place, which would rotate freely over central bar with some kind of bearings (I've no idea about bearings for this purpose, so could do with some advice here!). I'm not sure if spacers would be required between the bearings to make sure they stay at the required spacing along the bar. I'm also not sure if something would be required between the end caps and the outer sleeve in the middle to stop the rotation from unscrewing the end caps. A grub screw could be part of the design to hold the end caps onto the bar once they've been screwed on.
The above is possibly a bit vague, so please feel free to ask any questions before quoting
Design details: Hello,
I'm looking to manufacture a weight lifting barbell to use with rubber resistance bands instead of weight plates. I need to get some manufacturing drawings created with dimensions & details, as well as 3D models.
I have attached a PDF file showing some sketches of how I think the bar might work, as well as an image of an existing competitor's product.
Ideally, the bar needs to be capable of holding up to 500lbs (250lbs per side), but if the design doesn't allow this a lower amount would be acceptable.
The resistance bands used with the bar are solid loops (picture of one attached), which would slide onto the hanger at each end, and then be anchored at a point in the middle (not part of this design). The resistance bands are up to 90mm in width.
The hangers at each end would be bent so that the resistance band is secured in place and doesn't come off during the workout.
The hangers would attach to a central bar, which would have threaded holes in each end to accept the threaded parts of the hangers. The outer ends of the central bar would also be threaded to accept an end cap. The purpose of the end caps would be to hold the outer sleeve in the middle in place, which would rotate freely over central bar with some kind of bearings (I've no idea about bearings for this purpose, so could do with some advice here!). I'm not sure if spacers would be required between the bearings to make sure they stay at the required spacing along the bar. I'm also not sure if something would be required between the end caps and the outer sleeve in the middle to stop the rotation from unscrewing the end caps. A grub screw could be part of the design to hold the end caps onto the bar once they've been screwed on.
The above is possibly a bit vague, so please feel free to ask any questions before quoting
Dominic P.
100% (5)Projects Completed
6
Freelancers worked with
4
Projects awarded
44%
Last project
21 Aug 2020
United Kingdom
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Does your weightlifting barbell need to comply with the (EN 957 or ISO 20957 Standard)which applies to fitness products in the UK?
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Hi Dominic,
glad to found your job post here!
I wasn't able to reply to your last message nor am I able to contact you because your last job post was expired, hence all communications weren't allowed! Anyway, are you still up for sampling and manufacturing in China? If you do please let me know, thanks!
cheers,
AgnesDominic P.13 Mar 2018Hello Agnes,
I am still looking for sampling and manufacturing in China, is this something you can help with? My email address is Dominic@oakwood-lettings.com
587362587062
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