Keywords: tapered roller bearings; Conical roller; Measurement; improvement
Logarithmic curve tapered rollers can improve the performance of bearings. But. If the grouping difference and discreteness are large, the rollers are prone to deflection stress during operation, and the radial swing of the bearing will also increase, which has a significant impact on the vibration, noise, service life, and reliability of the bearing. Therefore, whether the grouping difference of logarithmic curve tapered rollers is accurate is very important.
At present, the D744 detector is commonly used in the bearing industry for grouping logarithmic curve tapered rollers. During measurement, the contact stability between the roller profile and the angle table is poor, and interference is prone to occur. Due to the influence of the quality of the measuring personnel, the accuracy of the test results is poor. The D051 steel ball diameter detector has shown good performance in actual production processes. Avoiding similar situations.
1.Improvement of D051
The improved 13051 detector is shown in Figure 1.
Base; 2. Handwheel; 3. Small axis; 4. Measurement axis; 5. Tighten the nut; 6. Sleeve; 7. Refers to the whole nut; 8. Body frame; 9. 12. Tighten the handle; 10. Measuring head; 11. Holding a stand; 13. Pressure spring; 14. T-shaped casing; 15. Nut; 16. Measurement table
Figure 1 Improved D501 detector
Firstly, improve the fixing point of the fan-shaped comparator. Insert a T-shaped sleeve into the fixed fan-shaped comparator and install a pressure spring. Use a special nut to fix the T-shaped sleeve on the instrument frame. When checking the table, rotating the nut can make the instrument pointer point to the desired position. The accuracy of instrument adjustment has been improved.
Secondly, in order to increase stability when measuring rollers, the measuring head was improved as shown in Figure 2. Among them. The size D is determined based on the shape of the base surface of the tapered roller being tested.
Figure 2: Measuring head of D051 detector
Adjustment and use of improved D051
(1) Loosen the handwheel and adjust the body frame to the appropriate angle, then tighten the handwheel.
(2) Loosen the three fastening handles, adjust the measuring axis according to the standard part of the measured roller, and position the four measuring heads appropriately. Tighten the three handles.
(3) Loosen the 3 fastening nuts and fine tune the 3 adjustment nuts to ensure that the measuring head is on the cable line of the standard part. Tighten the three adjustment nuts and tightening handle.
(4) Adjust the nut according to the table size so that the pointer of the sector micrometer points at the desired reading.
The improved D051 detector adopts the method of pivot support positioning for measurement. The measuring head is located at the position of the roller line, and there is no interference between the roller and the positioning reference. The measurement system has good stability and the measurement results are relatively accurate. Practice has proved that the improved instrument can also measure the variation of the diameter of a single plane of the roller, and the indication is relatively accurate.
2024 October 2nd Week WBM Product Recommendation:
Super finishing roll:
We have 30 years in designing and producing experience in bearings rolling elements and tooling industry with ISO9001 and IATF16949.Tooling for cold heading machine,lathe,grinder will be produced accoriding to your requirement.
