BPR Rivet Ball Stud for Extremely High Loads
The BPR ball stud was developed to withstand extremely high loads and can be set in a progressive or transfer tool using an in-die automation system. Thus, the downstream operation for the orbital riveting of the ball stud is eliminated - with high cost savings as the result.
The BPR ball stud can also be set in very narrow sheets since it only requires minimum space. It is very similar to a standard ball stud but is a lot cheaper regarding the assembly.
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Current State of the Art Technology
There is a high number of ball studs in vehicles closure system. For example hinges of hoods and trunks. The following setting procedures are applied to fasten a ball stud in the bodywork:
- Orbital riveting of the ball stud with orbital riveting machines
- Welding of the ball stud by resistance welding
- Screwing the ball stud into a nut that has previously been welded or pressed into the sheet.
The prices are graduated according to the production costs and show that current setting procedures always come with a separate workstep.
The manufactoring of the bodywork thus requires another step which has a negative effect on the production costs due to expensive and elaborate automations.
Effective Production With the Rivet Ball Stud
BPR ball studs can already be inserted automatically during the manufacturing of the body sheet metal. The downstream operation is thus completely eliminated. Thereby, high cost savings potentials arise for you:
- Reduced logistics costs due to the elimination of in-plant transportation in between the production stages
- Reduced staff- and salary costs due to the elimination of a downstream operation
- Low space requirements (because no downstream system is required)
- Shorter processing times and thus, lower capital commitment and lower warehousing
Advantages of the BPR Ball Stud
The BPR ball stud can be inserted very closely to border areas. Only the diameter of the base is required as space. Thereby, it can also be inserted in very narrow sheet metals.
| Ball stud | BPR (blue) | Competitive product (red) |
|---|---|---|
| Head diameter | 10mm | 10mm |
| Base diameter | 13mm | 14mm |
| Space requirements | 13mm | 20mm |
Due to the special rivet geometry of the stud, the sheet is not deformed during the riveting. Thereby, the danger of indentations in border areas is eliminated.
| Ball stud | BPR (blue) | Competitive product (red) |
|---|---|---|
| Sheet metal deformation during riveting | No indentation | Indentation when riveting close to the edge or narrow sheets |
The BPR ball stud only requires a small pilot hole in the sheet to be inserted. Thereby, the stability of the sheet is affected as little as possible.
| Ball stud | BPR (blue) | Competitive product (red) |
|---|---|---|
| Pilot hole diameter | 5.8mm | 8.7mm |
BPR ball studs can be inserted into thin sheets (1 mm) as well as into thick sheets (5 mm). However, the stability of the sheet must be sufficient for the load to be carried by the ball stud.
The geometry of the BPR ball stud is very similar to a standard ball stud. For you as a developer or user, it is thus significantly easier to switch to our ball stud and to thereby save costs in your company.
Quick Developments of Special Applications
If you have to realize special requirements in your application, we can rather quickly (within approx. 3 weeks) present you a customized ball stud that meets your requirements and can perform test series with it.
The automatic processing system for such specialty fasteners can also be manufactured within the standard delivery time.
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