Valve Fitting

Description

A Korean Hydraulics manufacturer used to deburr all their valve fittings by hand. As part of X-BORES strategy who focusses on the deburring of crossbores that haven't been possible to be machined mechanically by a defined blade so far, HEULE contacted this potential company. In order to check out the limits of this new procedure, the most difficult application situations were selected.

Application details

Application details

  • Main bore-Ø Bore on the right: Ø33.0 mm
    Crossbore-Ø Bore on the right: Ø15.0 mm
    Challenge: Bore angle 16°
  • Main bore-Ø Bore on the left: Ø19.0 mm
    Cross bore-Ø Bore on the left: Ø15.0 mm 
    Challenge 1: Bore angle 16°
    Challenge 2: There is no work space for the tool at the bore intersection (R1).
  • Material: SS316
  • Machine: Doosan Horizontal Machine

Proposed solution by HEULE

Proposed solution by HEULE

The trials with tools with the COFA-X-function principle have been carried out directly at the customer's plant. The access to the bore edges to be deburred is via the crossbore. The following tool configuration has been used.:

  • Tool: COFA C6X-O-1000
  • Blade: C6X-M-0001-A, backwards cutting only

Machining parameters:

  • Speed: 10 m/min.
  • Feed: 0.07 mm/rev.

Benefits to the customer

Benefits to the customer

The customer's main interest was the replacement of the manual deburring work. After the successful trials, the prerequisits for the process change were given.

Upper image : Inner bore edge top right
Lower image: Inner bore edge bottom left (No harm to main bore wall!)

Due to the large production volume of these parts, the considerably lower process costs as well as the higher reliability had an immediate impact on the company's efficiency and profitablity.

Customer satisfaction

Customer satisfaction

The successful trials with more complex workpieces have led to a continuous change also at the less delicate parts of the range.

The development of this specific solution contributed signifcantly to the breakthrough and thus to the market maturity of the COFA-X function principle.