Manifold other taboo

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(1) Manifold volume should not be too large. Roadside thick to allow the oil case,

we should try to reduce the manifold block size, so that the hydraulicbsp hydraulic fitting s

The system is compact. If the manifold block size is increased, In addition to the

increase in production costs, block the pore depth corresponding increase in

technology poor

, And the channel position accuracy is difficult to control, to increase the

rejection rate.
(2) The eccentricity of hydraulic manifold block drilling intersecting holes no jic hydraulic fittings

larger than a specified value. As shown in Figure 4-41, Manifold drilling mostly

straight

Angle intersect, sometimes two right angles to the axis of the hole is not

completely intersect, called eccentricity is e, e relative to the ratio of the

aperture D is called the relative partial

Heart rate, E = e / D. Experiments and regression analysis, the empirical formula of

the local resistance coef ficient ξ, ξ = 1.6 +0.16 E0.04, when E

Less than 30%, the resistance coefficient ξ can be accepted.
(3) the spacing between the hydraulic manifold block ports should be noted that the

pipe joint rotation space. As shown in Figure 4-42, Manifold port should

Threaded, and screwed into the fittings outside the hexagon, so there should be

joint rotation, and the wrench space, should be avoided between the ports too close

To produce interference.
(4) Hydraulic Manifold channel inclined holes should be avoided. Manifold channels

of processing drilling, in order to prevent the drill bit damage to try toreusable fitting

To avoid any slant-hole
(5) hydraulic manifold block hole between the wall thickness of not less than 5mm.

Manifold drilling, wall thickness between the two channels should have suffi cient

strength

Oil pressure so as not to undermine the hole wall, usually designed wall thickness

greater than 5mm
(6) hydraulic Manifold deep hole not to ignore the processing possibility. Shown in

Figure 4-45, Manifold pore-drilling, drilling deep holes

The drill is easy to damage, usually drilling depth should not exceed 25 times the

aperture.