What causes the crankshaft bearing heat

Oct 10

Punch in the control or punch manufacturers will encounter crankshaft bearing fever scene, then what is the cause of it, then the source of the small series to the public about the reasons for the crankshaft bearing heat and punch factory test. Together to learn about it.
1, when the operation is not a collection or combination of the collector can not be opened after the reversal of health spring fall elasticity. Bond the camp too tight, the exchange of spring, the study of the combination of the distance between scraping key;

2, punch crankshaft bearing fever, shaft scraping bad, smooth bad, new scraping research copper tiles, check the lubrication situation;

3, rail burning, rail clearance is too small, poor lubrication, poor diplomatic relations, re-scratch the rail, swap space, pay attention to lubrication;

4, out of the oil from the bearing copper scrap, shortage of oil, lubricating oil is not clean, check the lubrication, interruption of bearing test scrubbing.

Design of Crankshaft for 3D Drilling Machine

Oct 07

Because the stress distribution is very uneven, the cross-section of the three-dimensional NC drilling machine drastically changes along the axial direction, especially in the transition fillet of the crank arm and the journal, the stress concentration near the oil hole is serious. , The stress concentration area may produce fatigue damage, so the three-dimensional CNC drilling machine crankshaft in the design, you need to meet certain requirements.
Three-dimensional CNC drilling machine
1, sufficient strength, mainly crank parts of the bending fatigue strength, torsional fatigue strength and power input static strength.
2, sufficient rigidity, to reduce the crankshaft around the curved deformation, in order to ensure the piston rod and crankshaft bearing reliable work, while increasing the natural frequency of the crankshaft, try to avoid resonance within the working speed range.
3, journal – bearing vice has a sufficient pressure area and high wear resistance, oil hole layout is reasonable.
4, three-dimensional CNC drilling machine in a reasonable arrangement of the crank to make it work smoothly, torque uniformity, and improve the shaft torsional vibration situation.
5, a reasonable allocation of balance block, reduce the main bearing load and vibration.
The above-mentioned design requirements are interrelated with each other, and the structural shape and main dimensions of the crankshaft part have certain influence on the flexural fatigue strength and torsional rigidity of the crankshaft. Therefore, the structural strength of the crankshaft must be paid full attention in the design .

Analysis on the Difference between Linear Guide and Planar Guide of NC Drilling Machine

Oct 05

CNC drilling machine linear guide and flat rail are part of the basic components of a, but their role is completely different.Now we mainly said CNC drilling machine linear guide and the difference between the plane rail.
CNC drilling machine linear guide is the role of a guide can be the direction of the components, and it is fixed on the device installed above, but the plane is different rails, it is not fixed but can be free to move the basic components. And because the linear guide size and production standards are standard production products, so we can also be classified into the standard linear guide rails in this category, so when the production business in the production of linear guide when the optional installation of a rail Plane and the alignment of the rail, but also to ensure that the parallelism of the two rails in the appropriate range.
In the installation of the time, whether linear or flat rail, in the installation time is relatively simple, but because the linear guide cross-section of the shape is geometric shape, this shape than the plane rail cross-section The shape needs to be loaded much, because the groove of the guide rail of the linear guide is required to be machined so that the slide member can be smoothly slid by the aid of these grooves.
CNC drilling machine linear guide can withstand the force from the straight line can also bear from some of the remaining direction of the force, this design is linear guide and the difference between the plane rail, in the purchase of the time also need to select Of the piece to be very attention.

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