NUP single row cylindrical roller bearing inner ring raceway structure width measurement technology

Single row cylindrical roller bearing NUP structure inner ring raceway 2019 - width measurement technique 11 - 08 cylindrical roller bearing according to ring guard in the presence of classification, the structure of the conventional type NU type, N type, NJ with NUP four, as shown in figure 1. Figure 1 the conventional single row cylindrical roller bearing type according to using need, there are other penal structure types of single row cylindrical roller bearings, such as NH, NF, RNU and RN, etc. Figure 2 other types of single row cylindrical roller bearing single row cylindrical roller bearing outer ring double penal structure, measuring groove width available W203 comparing measurement instrument. Single row cylindrical roller bearing inner ring structure type is outer ring, the NUP series structure of inner ring raceway width need precise control in the process of grinding, reason is the guarantee of cylindrical roller bearing axial clearance values. Currently have the measurement method of NUP series inner ring groove width, such as the inner ring raceway position template or standard measures of rings. Methods used at present there are some problems, such as the position measure three problems, one is that can accurately measure the width of the inner ring raceway size of true value, the second is different inspectors will appear different test results, three model is easy to wear and tear, cause the measuring error is larger. Standard measuring ring main problem is a set of each model to do, need is more, the number of management and cost increase. In view of the present measuring NUP type cylindrical roller bearing inner ring groove width, the problem existing in current put forward a new solution. New plan is on the basis of the existing height measuring instrument increases a set of levers structure, lever transmission ratio can be set according to the existing space, and suggested the structure of the set of 1:1, so in the process of measurement can be read directly numerical display the meter, if not 1:1 transmission structure, header after the display of data conversion is required is the measure of real value. A new scheme of structure schematic diagram, as shown in figure 3. Figure 3 NUP series cylindrical roller bearing inner ring groove width measurement technology principle chart description: 1 Table mountain, 2 - Leverage and bracket, 3 - Measuring meter, 4 - NUP series cylindrical roller bearing inner ring using method, with the first to measure the height of the raceway size of the same piece of the table ( Using highly piece on the table, need another relatively thin the height of the block stack with the height of the raceway size is the same piece of end face, the hands of the table compression at the top of the height, in thin height measuring head block and measuring height block interface) , such as the width of the E = 20 mm, with a height is the height of 20 mm piece on the table, and then can be measured. （ Source: the bearing design and manufacture and application of technology)