Application of Interest
Automotive Industry – Valve Body Fitting Insertion - SCHMIDT® Application 2903
SCHMIDT® Technology was selected to design a pressing station to insert multiple push-lock type fittings into a valve body to reduce parts handling, cycle time and to improve quality. Flexibility to process any combination of three fitting styles, including two sizes straight and one size elbow fitting into the eight ports on the valve body was critical. For quality assurance, verification that the correct fitting was inserted in the correct location and for each fitting to be seated 100% against the valve body, despite part tolerances, was required.
Based on the force requirements, the type of operation and the need for flexibility, a Schmidt Nr. 27M Direct Acting Air Modular Head was selected for the fitting insertion. This press was mounted horizontally and pushed against a stationary anvil on the left hand side. A Nr. 20 Direct Acting Air Press was incorporated vertically to clamp the valve. The Nr. 20 and the nesting fixture were mounted to a slide which allowed for a lateral ‘floating’ as fittings are pressed into the valve body.
To complete the operation, the valve body is placed into the nest with the fitting port axis horizontal and eight fittings are placed into their respective ports. After closing the guarding, the Nr. 20 press clamps the valve body. The Nr. 27 press ram now extends with low Force to slide the clamp, nest and part to a back-side support anvil. Just prior to fitting insertion, the ram stops and sensors verify for each fitting to be in the present and in proper position based on the operator selection made on the touch screen type HMI. Once verified to be correct, the press will continue to fully insert four of the fittings, two on one side and two on the opposing side, into the valve. Once this cycle is complete, the operator rotates the nesting fixture by 90 degrees and initiates a cycle. The same sequence as described above is completed the remaining four fittings. After completing this second sequence, the operation is complete and the part is manually removed.
By combining insertion operations, Schmidt was able to reduce both parts handling and cycle time dramatically and still maintain quality control of the final insertion height using simple sensors.
See other interesting applications at www.schmidtpresses.com/products/presses/7appFliers/qFliers.cfm
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