Mechanical options are very convenient to use and do not require any external power to operate. The measuring head consists of a table, in the shape of a mushroom (stylus), the traffic is due to the difference in height between the reference point and the object that drives the pointer to move along the??????????. This is the movement of the fungus that will be boosted by gear on the train or the platform. With the increase in the mechanical alternatives, it is limited to 1000. They are cheap and designed for the measurement of the external surface.
However, the use of mechanical devices subject to wear and tear.
Often it can be of the following types of mechanical alternatives that may be used in::
(1) dial indicator
(2) Reed type mechanical comparator, and
(3) The use of a sigma comparator.
1. Gauge:
The lever / (index) can be adjusted to the desired height along the column. There is a desk, based on the provision of a support surface on which the work is placed over the meting.De the linear motion of the pin is passed to increase the control of the transmission gear train, a significant rotation of indicator on the scale. This is the indicator is set to zero, with the help of slide-in sensors, which are the basis of the size of the component.
2. Reed type mechanical comparator:
Mechanical comparator with a recently-unit increase in the small displacement of the working element of the valve stem.
The solid block of I, which is rigidly connected to the print head calibration of the case, and the variable block B, block adds, and as K is perpendicular to a particular unit
Sugar, S., Vertical tabs, to be provided by each block is at the top, connected, and the pointer will be delivered behind that link. The linear motion of the rod is to move the free block vertically, and the vertical was on the block in the slide, next to the vertical, was on the steady-state block. This movement will cause the reeds to sway in a curve because they can be attached to the top of the pointer, which is an extension of reed-swing in a wider arc. The magnitude of the indicator is proportional to the distance from the floating block. The mechanical is likely to be less than 100, but it will be reproduced as an optical lens system. The strengthening of the alternatives ranges from x 500 x 1000.
3. The sigma comparator:
A Sigma comparator, mechanical comparator, in which the reinforcement is fitted with a composite handle. He Is a very ?????????? and to be sustainable, but it is also virtually free from wear. When the piston is raised, the moving block is to follow the edge of the blade, and on the Y arm around the x-axis of the tire. Connected to the
other ends of the Y-shaped arm has a very stretchy band are made from phosphor bronze. The band revolves around the axis of the indicator. Therefore, this is the radial clearance, the front fork is running with the indicator, a spindle, and, therefore, of the index. Due to the distance of the spindle
indicator in the future growth of the indicator is to be created by the following formula: (R/r). The overall growth rate of the comparator is set
if
= b/a×R/r
A sigma comparator should be making use of a damping device to ensure that the tip of the blower before it ends.
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