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Planetary roller screw transmission mechanism capable of achieving self-adaptive temperature control

A technology of planetary roller and transmission mechanism, applied in the direction of transmission, transmission parts, mechanical equipment, etc., can solve the problems affecting the service life of planetary roller screw transmission mechanism, thermal deformation of planetary roller screw transmission mechanism, Column screw drive mechanism damage and other problems, to achieve the effect of easy installation, good self-adaptation, and lower temperature rise

Inactive Publication Date: 2019-03-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The friction of the planetary roller screw transmission mechanism will generate heat during the long-term movement at high speed, which will cause the temperature to rise. If the total heat generated is too much and the heat exchange is insufficient, the viscosity of the grease will be affected, resulting in the planetary roller screw transmission. Thermal deformation of the mechanism will reduce the accuracy and reliability of the entire transmission system, affect the service life of the planetary roller screw transmission mechanism, and may even lead to failure and damage of the planetary roller screw transmission mechanism

Method used

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  • Planetary roller screw transmission mechanism capable of achieving self-adaptive temperature control
  • Planetary roller screw transmission mechanism capable of achieving self-adaptive temperature control
  • Planetary roller screw transmission mechanism capable of achieving self-adaptive temperature control

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Embodiment 1

[0020] see Figure 1-4 , this embodiment includes a nut 9, the two ends of the nut 9 are provided with an inner ring gear 10 that is screwed and docked with it, and one end of the nut 9 is provided with an end cover 7 that is screwed and matched with it, and the inside of the nut 9 There are several rollers 8 arranged in a circular array, and the two ends of each roller 8 are processed with straight teeth, which mesh with the inner ring gear 10 installed at both ends of the nut 9, and the rollers 8 pass through the cage 11 The circumference is evenly distributed around the hollow screw 14, the cage 11 is axially positioned by the retaining ring 12, the roller 8 is provided with an external thread that engages with the hollow screw 14 and the nut 9, and the hollow screw 14 is arranged in the middle of the nut 9, and one end of the nut 9 is provided with an end cap 7 screwed to it, and the end of the hollow lead screw 14 passes through the end cap 7 and is connected to the outer...

Embodiment 2

[0025] In this specific embodiment, the coolant circulating pump 17 provides power, and the coolant flows through the outlet pipe 18 through the hollow lead screw 14 to take away part of the heat generated by the lead screw, and then takes it away through the wedge-shaped hole 20 of the end cover and the annular groove 23 of the nut Part of the heat generated by the nut 9 finally flows back to the cooling liquid circulation pump 17 from the outlet through hole 24 below the nut 9 to complete the circulation of the cooling circulation system. Four magnetic temperature sensors 13 are placed on the nut 9 to pass through the magnetic temperature sensor 13 The monitored temperature changes are used to feedback and adjust the flow rate of the coolant circulation pump 17, so that the temperature can be adaptively maintained within a certain range, and when the set temperature upper limit is reached, the program will generate an alarm. And place a thermal imager 15 to monitor the temper...

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Abstract

The invention discloses a planetary roller screw transmission mechanism capable of achieving self-adaptive temperature control. The planetary roller screw transmission mechanism comprises a nut (9). Inner gear rings (10) in rotary butt joint with the nut (9) are arranged at the two ends of the nut (9). An end cover (7) in rotary connection fit with the nut (9) is arranged at one end of the nut (9). Multiple rolling columns (8) arranged in an annular array manner are arranged in the nut (9). Straight teeth are machined at the two ends of each rolling column (8). The straight teeth are engaged with the inner gear rings (10) at the two ends of the nut (9). The rolling columns (8) are circumferentially and evenly distributed around a hollow lead screw (14) through holders (11). By means of a cooling circulating system, cooling liquid flows through the hollow lead screw through a liquid outlet pipe to take away part of heat generated by the lead screw, part of heat generated by the nut is taken away by an end cover wedge hole and a nut annular groove, and temperature increase generated by friction during work of the planetary roller screw transmission mechanism can be effectively reduced.

Description

technical field [0001] The invention relates to a temperature real-time monitoring and temperature rise adaptive control device, in particular to a scheme for adaptively controlling the temperature rise of a planetary roller screw transmission mechanism. Background technique [0002] The planetary roller screw transmission mechanism is a high-precision mechanical transmission mechanism that converts the rotational torque of the servo motor into a linear thrust. It has the advantages of large thrust, high precision, high efficiency, and long life, so it is widely used in aviation Aerospace, high-end CNC machine tools, medical equipment, precision instruments, weapons and industrial robots and other fields. [0003] The friction of the planetary roller screw transmission mechanism will generate heat during the long-term movement at high speed, which will cause the temperature to rise. If the total heat generated is too much and the heat exchange is insufficient, the viscosity ...

Claims

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Application Information

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IPC IPC(8): F16H25/22F16H57/04
CPCF16H25/2252F16H57/0412F16H57/043F16H57/0497
Inventor 刘更杜传明马尚君蔡威乔冠
Owner NORTHWESTERN POLYTECHNICAL UNIV
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