A customer came to Demsey Manufacturing Co., Inc with an HVAC sensing bulb that required deep drawn stamping of Type 304 stainless steel. After successfully completing this project and being in production for approximately one year, the customer mentioned that they were having difficulty with a secondary swaging process that had to be done to the part. At this point, Demsey asked if they could have a print of the swaged part to examine. It was determined that the part could be made complete with only two additional operations in Demsey’s existing tooling and little difference in the piece price.
Since there was a line of communication now open with the customer’s Engineering Department, Demsey asked about the assembly process that was done with the swaged part. There was a screw machine part that was welded to the top of the sensing bulb. Demsey examined the cap that was machined out of Type 304L Stainless Steel and felt that it could be converted to a deep drawn stamping. The customer found this to be much more economical while it did not sacrifice any functionality. Now Demsey makes both parts which also ensures a better fit between the two.
Product Name | Sensing Bulb & Bulb Disc |
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Volume | 100,000 Pieces Per Year of Each |
Tightest Tolerances | ±.001" Straightness of .002" |
Standards Met | Customer supplied print, 2D CAD Drawing ISO 9001:2015 |
Product Description | These stainless steel components are used within HVAC applications. |
Overall Part Dimensions | Material Thickness: Bulb: .020" Cap: .020" Width: Bulb: .625" Disc: .600" Height: Bulb: 2.060" Disc: .200" |
Material Used | Bulb: 304 Stainless Steel Disc: 304L Stainless Steel |
Industry for Use | HVAC |
Estimated Part Weight | Bulb: .0210 pounds Cap: .0023 pounds |
Equipment Used to Manufacture Part | 20-10 Waterbury Farrel - Bulb 325 U.S. Baird - Disc |
Delivery Time | 8 Weeks |
Delivery Location | U.S.A. |
Capabilities Applied/Processes | Part Redesign Tool Design & Manufacturing Deep Drawn Stamping Elimination of Customers Secondary Operation Converted from Screw Machining to Stamping Reduction in Raw Material Usage Increased Production Rate Cost Savings |
Bulb: 304 Stainless Steel Disc: 304L Stainless Steel | Disc to fit to bulb for proper clearance |