Machining a CV joint – full of intermittent challenges!
02:22


One of the most vital parts in the drive line on a front wheel driven car, and some rear driven cars with individual suspension, is the CV joint. The design of the component makes it possible to keep a constant velocity of the drive wheel regardless of steering angle of the wheel, hence the name – CV joint. There are two main types – the inner CV joint which is the one closest to the gearbox and the outer CV joint closest to the wheel hub.

Focus in this post is on the outer CV joint which contain three main parts that are all hard turned and contain very heavy interruptions. Machining of the housing has been shown in an older post https://cbnexpert.blogspot.se/2016/02/secomax-ch3515.html.



One of the latest successes we have on these components is on the ball cage where we tripled the tool life. We lost 8s of cycle time but that was not a problem at this customer. The increase in tool life was valued much higher by the customer.

For more information, please contact your local Seco representative, or our Advanced material (PCBN/PCD/CERAMIC) team.




Author:
Stefan G Larsson Fritz
Product Specialist SECOMAX PCBN/PCD/CERAMIC
SECO TOOLS AB
737 82 Fagersta, Sweden
Office +4622340572
Mobile +46761367807
email:stefan.g.larsson@secotools.com

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Secomax™ The HPT grade chain
23:00

It can be difficult to define application area just by looking at a drawing


It isn´t just the level of interruptions that’s defining an application area. It´s many other process factors that will affect the choice of PCBN grade. A drawing on the finished part explains just the properties of the component. Factors like Machine tool, clamping, workpiece stability, variations from the green turning, workpiece stability, etc. are factors that actually can “move” an application from what on the drawing looks like a H05 application to a H15 and in some extreme cases from H05 to H25.


 Example: Large variation from the green turning on a Pinion “moved” the application from what on the drawing looked as a H05 to in the reality a H25 application. (From CH0550 to CH2540)





















For more information, please contact your local Seco representative, or our Advanced material (PCBN/PCD/CERAMIC) team.



Author:
Per Ola Jönander
Product Specialist SECOMAX PCBN/PCD/CERAMIC
SECO TOOLS AB
737 82 Fagersta, Sweden
Office +4622340818
Mobile +46703163555 email:perola.jonander@secotools.com

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