Planetary roller screw precision test device
A planetary roller, precision test technology, used in measuring devices, optical devices, mechanical parts testing, etc., can solve the problems of incomplete accuracy test devices, deviations in readings, etc., to achieve high reliability, simple operation, The effect of high test accuracy
Inactive Publication Date: 2017-12-29
NANJING UNIV OF SCI & TECH
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Problems solved by technology
Domestic precision testing devices for planetary roller screws are not very complete, some use manual testing, and the readings themselves have deviations
Method used
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[0023] to combine figure 1 and figure 2 ,
[0024] A planetary roller screw precision test device, including a base 1, a workbench 2, a guide rail 3, a grating ruler 4, a nut sleeve 5, a planetary roller screw 6, a bearing seat 7, an angle encoder 8, and an elastic coupling Device 9, motor support 10, servo motor 11, the adjacent two sides of nut sleeve 5 are processed into planes, and workbench 2 and motor support 10 are fixed on base 1. Workbench 2 includes auxiliary support 2-1, guide rail platform 2-2, support 2-3, guide rail platform 2-2 is connected with auxiliary support 2-1 and support 2-3, and guide rail platform 2-2 is processed Groove, guide rail 3 is fixed in the groove of guide rail platform 2-2, and guide rail 3 plays the effect of supporting nut sleeve 5 and preventing it from rotating. The boss of bearing seat 7 is contained in the hole of bearing 2-3, and angle encoder 8 is installed on one side of bearing seat 7. The servo motor 11 is installed on the mo...
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The invention discloses a planetary roller screw precision test device. The workbench is fixedly arranged on the base, and the workbench has two mutually perpendicular working surfaces. It is fixed on the working surface parallel to the worktable and the base, and the bearing seat is set on the working surface perpendicular to the worktable and the base. The bearing seat is provided with a bearing, and the guide rail is provided with a slider. The nut sleeve is connected with the slider and the grating ruler. The moving scale is connected, the nut of the planetary roller screw is fixedly connected with the nut sleeve, the screw shaft is fixedly connected with the inner ring of the bearing, and connected with the output shaft of the servo motor through an elastic coupling, and the angle encoder is set on the bearing. On the seat, the elastic coupling connected to the screw shaft of the planetary roller screw is locked by the inner ring of the angle encoder; the invention can simultaneously collect the screw rotation angle and the axial displacement of the nut of the planetary roller screw, The test precision is high; and the structure design is reasonable, the operation is simple, and it has high reliability.
Description
technical field [0001] The invention belongs to the technical field of mechanical device precision testing, in particular to a planetary roller screw precision testing device. Background technique [0002] Similar to the ball screw, the planetary roller screw is a mechanical device that can convert rotary motion and linear motion. It has been widely used in precision machine tools, food packaging, special machinery, test simulation and other fields. Different from the ball screw, the planetary roller screw uses threaded rollers instead of balls for load transmission. The rollers can be processed into a circular arc convex tooth shape with a large radius of curvature, and the rollers are evenly arranged around the screw. There are many contact points, and the amount of contact deformation at the contact points will be greatly reduced, so the precision, rigidity and load-carrying capacity of the planetary roller screw are higher than that of the ball screw. [0003] At presen...
Claims
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IPC IPC(8): G01M13/00G01B11/00
Inventor 范元勋崔高尚葛邵鹏程濮建荣
Owner NANJING UNIV OF SCI & TECH