A planetary roller screw pair assembly fixture
A planetary roller and assembly fixture technology, which is applied in the direction of assembly machines, manufacturing tools, workpiece clamping devices, etc., can solve problems such as difficult assembly, unreasonable relative position between the roller shaft end and the planetary frame, and reduced transmission reliability. , to achieve the effects of simple structure, improved assembly efficiency and assembly accuracy, and convenient processing and manufacturing
Active Publication Date: 2017-06-13
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology
[0005] In order to avoid the deficiencies of the existing technology and overcome the difficulty in assembly of the planetary roller screw pair due to its compact structure and complex meshing relationship, and the unreasonable relative position between the roller shaft end and the planet carrier, which reduces its transmission reliability, The invention proposes a planetary roller screw pair assembly fixture
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Embodiment Construction
[0022] This embodiment is a jig for assembling a pair of planetary roller screw screws.
[0023] refer to Figure 1 to Figure 5 , the planetary roller screw pair assembly fixture in this example includes a moving fixture assembly 1 for fixing the position of the roller, a nut support assembly 2 for supporting and fixing the nut to be assembled, a linear guide rail 3, and a base 4; a linear guide rail 3 They are respectively fixed at both ends of the base 4 , the nut support assembly 2 is fixed at the middle of the base 4 , the moving fixture assembly 1 and the nut support assembly 2 are installed coaxially, and the moving fixture assembly 1 moves axially along the linear guide rail 3 .
[0024] The mobile fixture assembly 1 is composed of a slider 5, a base 6, a bolt 7, a wing nut 8, a connecting flange 9, a roller pressure rod 10, and an arc spacer 11. The two sets of mobile fixture assemblies 1 have the same structure and are located at on the linear guide rails 3 at both e...
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The invention discloses an assembling clamp for a planet roller screw rod pair. The assembling clamp comprises movable clamp components which are used for fixing the rollers and can move along linear guide rails, a nut supporting component for supporting and fixing assembled nuts, the linear guide rails and a base, wherein the nut supporting component is installed at the middle part of the base; two groups of linear guide rails are fixed at the two ends on the base respectively and coaxially installed; roller pressure rods rotate by using a pin shaft as a fulcrum so that one ends, with arc-shaped cushion blocks respectively, of the movable clamp components tightly press the rollers, and when the rollers are fixed by the roller pressure rods, planet carriers and spring retaining rings are installed to position all the rollers; and the nut supporting component regulates the horizontal heights of the assembled nuts by inclined plane matching of a horizontal sliding block and a vertical sliding block, so that the axial line of the nut supporting component is coincided with the axial lines of the movable clamp components at the two ends, and assembly of the nuts with different outer diameters is adapted. The assembling clamp for the planet roller screw rod pair has a simple structure, is convenient to machine and effectively improves the assembling efficiency and accuracy.
Description
technical field [0001] The invention relates to the technical field of mechanical manufacturing and process equipment, in particular to a fixture for assembling a planetary roller screw pair. Background technique [0002] In the existing published technical literature "New Development and Key Technologies of Planetary Roller Screw Pairs" ("Mechanical Transmission", 2012, Volume 36, No. 5, Pages 103-108), the planetary roller screw pair is Its compact structure and complex meshing relationship make assembly difficult. During the assembly process, how to ensure the meshing of the roller thread and the nut thread while ensuring the meshing of the roller and the ring gear, and to facilitate the sequential installation of multiple rollers is very important. , it is easy to appear that the relative position of the roller shaft end and the planet carrier is unreasonable caused by improper assembly, which will affect the normal realization of its transmission function and reduce the...
Claims
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IPC IPC(8): B25B11/02B23P21/00
CPCB23P21/002B25B11/02
Inventor 刘更万琦佟瑞庭马尚君张文杰
Owner NORTHWESTERN POLYTECHNICAL UNIV