innovations CASTING
M
Simplifying and Improving a Complex Welded Assembly
onarch Industries, Winnipeg, Mani- toba, Canada, re- cently worked with its customer Morris
Industries, Saskatoon, Saskatchewan, Canada, to convert a family of six weldments into machined D65-45-12 ductile iron castings. T e castings in the RAZR disc drill
are used on a new single disc opener system mounted to an agricultural implement frame. It is actuated hydrau- lically via a tractor hydraulic remote, which provides hydraulic down force to accurately follow the ground while opening a seed furrow. Seeds are placed within the open
furrow and the furrow is closed and packed with a minimum level of dis- turbance. All of this happens at high speeds and requires signifi cant strength, weight and torsional rigidity. Certain welded components (the
scraper boot and rear link) required diffi cult welding procedures to avoid warpage and assembly interferences. T ese issues were eliminated through the conversion to casting the part. Casting the opener allowed Morris
to strengthen it in critical areas where it was needed. T is added to the weight of the opener, which is benefi cial for a disc, for proper penetration of the openers. T is strategy adds weight where it also increases strength and allows the elimi-
Six weldments with a total of 35 individual steel pieces were replaced by six machined ductile iron castings. None of these six castings could be further integrated due to each one providing linkages and pivot points for mating parts.
nation of required frame weights for a net savings to the customer. Cast-in features like handling loop holes (rear link), drafted bosses for wear washer assembly (mounting bracket) and bolt head holders (lower link, top link, mounting bracket) make assembly and handling of the openers quicker and easier. Morris Industries manufactures
agricultural equipment including air seeders, harrows, packer bars and bale
carriers and is a global agricultural equipment supplier. “With production facilities already
running at near capacity levels, Morris had limited labor hours available for any signifi cant build numbers of this new product,” said Monarch Industries’ Mark Hildebrand. “By eliminating fabrication time for welded components, Morris can focus on assembly of the openers only and greatly increase the number of disc drills that can be built and sold in a calendar year. Parts are received machined and ready for assembly without any further operations required.”
For more information, go to
www.monarchindustriescom.
MEDIA
RESOURCE Using the Actable App, scan this page
The RAZR disc drill’s single disc opener system is actuated hydraulically at high speeds and requires signifi cant strength, weight and torsional rigidity.
to see more design features of the castings. For instructions on how to use the app, go to page 30. To watch online, go to
www.metalcastingtv.com.
Jul/Aug 2013 | METAL CASTING DESIGN & PURCHASING | 49
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60