![]() ![]() Now when the driving crank moves from the point CA2 to CA1. (or the link DP from the point DP1 to DP2) through an angle α in the clockwise direction, the tool moves from the left-hand end of its stroke to the right-hand end by a distance of 2 PD. When the driving crank CA moves from point CA1 to CA2. Read also: What is a Single Point Cutting Tool? How To Use It? Working along a line passing through D and perpendicular to CD. The movement of the tool is constrained along the line RD produced. The connecting rod PR carries the ram at R to which the cutting tool is fixed. The slider (link 4) connected to the crankpin at “A” moves along the slotted bar “PA” (link 1) which oscillates at a pivoted point D. The driving crank “CA” (link 3) rotates at a similar angular speed. Link 2 matches a crank in a reciprocating steam engine. ![]() In this type of shaper machine mechanism, the link CD (link 2) forming the turning pair is fixed. This mechanism is also used in slotting machines other than a shaper. The radial slide is bolted to the center of the bull gear it carries a sliding block into which the crankpin is fitted. The bull gear is a large gear mounted within the column. The speed of the bull gear may be changed by a different combination of gearing or by shifting the belt on the step cone pulley. ![]() Or overhead line shaft through a speed control mechanism. In this type of shaper machine mechanism, t he power is transmitted to the bull gear through a pinion which receives its motion from an individual motor. Read also: What Are The Different Types of Shaper Machines? Types of Shaper Machine Mechanismsįollowing are the 4 main types of Shaper Machine Mechanism: These are usually obtained by following the four types of shaper machine mechanisms. The reciprocating movement of the ram and the quick return mechanism of the machine. This mechanism is known as the quick return mechanism. The cutting speed depends upon the type of material and machining condition whereas during the return idle return time. The shaper mechanism should be so designed that it can allow the ram to move at a slower speed during the forward cutting stroke. To reduce the full machining time it is important to reduce the time taken by the return stroke. In a standard shaper, metal is cut in the forward cutting stroke, while the return stroke goes idle and no metal is cut during this period. The ram holding the tool makes the reciprocating movement. ![]()
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