056 Mechanical Engineering

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1 The concept of technological products (assembly units, parts, pieces)
Classification of Class 2 parts "round rods"
Activity 3
Technical regulation in mechanical production. The technical standard time and its elements. Determination of the elements of a piece of time.
Determine the piece-rate calculation time when drilling through-hole layout on the eighth precision quality class 50 steel billets height h = 50 mm. Cutting conditions: feed s = 0,1 mm / rev, speed drills n = 180 min-1. Processing is performed on the vertical drilling machine model 2N118 drill diameter D = 12 mm. Harvesting weighing 10 kg is installed in the grip of a screw connection. Control the size of a stopper made two-way marginal. To determine the coefficients of normal time and the use of the machine power. The amount of torque to take M = 75 N × m
4 Process Flow Diagram of manufacturing shaft
Task 5
To determine the expected surface roughness in turning medium carbon steel hardness 140 HB cutter blade with carbide T15K6 with geometric parameters: φ = 750, φ1 = 250, r = 0,5 mm; and cutting conditions: t = 1,2 mm, s = 0,10 mm / rev, v = 80 m / min
6 Describe the design and technological features of the details of design-engineering code. Code - 753433.542124.28418459


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