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Variety Blog

Parts Assembly Toronto

5/29/2019

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Machining processes are sometimes used as secondary operations on molded and formed parts, but are most commonly used in the fabrication of flat plastic sheet, or rod and bar stock into finished products. Because of heat buildup both in part and in the tool bit during precision machining in Toronto, coolants are often used to control temperatures.

Coolant mediums can include:

  • Clean compressed air
  • Mist sprays
  • Water soluble oils
  • Light cutting oils

Careful selection of a coolant during precision machining in Toronto is needed to avoid any adverse reactions in the material.

The technological processes of assembly may be classified as individual, group, or standard. Individual processes are developed for the assembly of a single particular item. Group processes can be applied to the assembly of a number of items or modules that have common design characteristics. Standard processes are designed for various categories of connections and modules based on advanced assembly methods at a precision machining Toronto shop.

In formulating assembly operations and their sequence, the organizational forms become apparent. The assembly may be progressive or nonprogressive. The transport of the item being assembled from one work station to another in progressive assembly may be accomplished manually (on a workbench, along a roller conveyor, or on carts), by hoisting machines (cranes or telphers), by periodic conveyors, such as apron conveyors or carts chain driven along a closed rail line, and by continuous conveyors.

Snap fits are integral fasteners molded into plastic parts, which when assembled lock into place. Snap fits are quick and easy to use in permanent assembly, and for when disassembly is required. Hinges are used in assemblies requiring repeated opening and closing. The three basic types of hinges include, one-piece integral hinges, two-piece integral hinges, and multi-part hinges. Each hinge type has a particular use with multi-part hinges being used for heavy duty applications.

Common mechanical Fasteners during precision machining in Toronto for plastics include screws, eyelets, and rivets. These fasteners are installed manually or automatically. For retention strength, threaded metal inserts may be added to parts to firmly hold the mating screw. Bonding is used to effect strong and permanent joints. The two principle bonding methods are adhesive bonding using specific adhesive materials followed by a curing, and solvent bonding in which the surfaces to be joined are melted resulting in molecular cohesion. 

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