Bearing developments in the oil and gas industry
Bearing developments in the oil and gas industry
PRODUCT
Technology analysis of bearing sleeve parts
by：Waxing
2020-10-03
The parts is mainly composed of inner and outer cylinder, inner conical surface, circular arc surface and external thread surface composition, figure dimensioning parts complete, contour description clearly.
Of 50, phi phi 52 cylindrical have high dimensional accuracy and surface roughness requirements, and the radial circular run-out tolerance of phi 32 hole is 0.
1毫米;
Left end surface is the phi 32 hole axis straightness tolerance of 0.
1毫米;
Phi 78 cylindrical surface roughness requirement, have higher outside the cylinder surface roughness for Ra1.
6μm。
Parts material for 45 steel, machinability is good, no heat treatment and hardness requirements.
Through the above analysis, adopt the following measures: (
1)
When programming with the pattern on the size of tolerance, all take the average.
(
2)
About face design benchmark for multiple dimensions, before the corresponding process, should be around end car out.
(
3)
Cylindrical internal hole of the radial circular runout requirement in 0.
01 mm, inside turn the clamping, besides want to pack a layer of copper sheet, clamping force wants moderate, not too big.
If it doesn't guarantee using soft jaw clamping.
(
4)
Inner hole and the left end face should be in a clamping processing, to ensure the verticality of end face and inner hole axis.
(
5)
Cylindrical bearing sleeve for IT7 level precision, using coarse car -
Semi finished car -
Fine car can meet the requirements.
(
6)
Inner hole size is small, boring and 15 ° taper hole and phi 32 boring and cone to turn around when the clamping.
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