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A kind of flexible anti-backlash gear with easy controllable stiffness

A gear and flexible technology, applied in the direction of belts/chains/gears, components with teeth, portable lifting devices, etc., can solve the problem of gear pair bearing capacity and working life reduction, the normal contact pressure is difficult to be effectively guaranteed, and the use of space Range limitation and other issues, to achieve the effect of eliminating tooth backlash, overcoming normal contact pressure, and eliminating impact noise

Inactive Publication Date: 2017-08-01
NANJING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flexible anti-backlash gears using hydraulic cylinders as flexible elements have a complex structure, large overall size, and limited use of space; flexible anti-backlash gears that use coil springs or rubber springs as flexible elements, because the spring preload travel is limited, the spring The stiffness coefficient is difficult to control and other reasons make it difficult to effectively guarantee the necessary normal contact pressure between the meshing tooth sides of the gear pair, which leads to a great reduction in the effect of the gear pair on eliminating shock, vibration and noise, or the bearing capacity of the gear pair. The working life is greatly reduced

Method used

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  • A kind of flexible anti-backlash gear with easy controllable stiffness
  • A kind of flexible anti-backlash gear with easy controllable stiffness
  • A kind of flexible anti-backlash gear with easy controllable stiffness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment 1 designs a flexible anti-backlash gear whose stiffness is easy to control. The specific structure is as follows.

[0025] Such as figure 1 , 2 As shown in and 3, a kind of flexible anti-backlash gear whose stiffness is easy to control in this embodiment 1 includes a first misalignment gear 1 and a second misalignment gear 2 that are fitted and connected along the axial direction of the transmission shaft 9, and the first misalignment gear 1 A shaft sleeve 4 is also connected between the second misaligned gear 2 and the transmission shaft 9; the paired key grooves 41, 11 at the connection position between the shaft sleeve 4 and the first misaligned gear 1, and a key 5 is connected between the paired key grooves 41, 11 The connecting part of the shaft sleeve 4 and the second misaligned gear 2 is also provided with a boss 42, and the corresponding position of the boss 42 and the second misaligned gear 2 outside it is provided with at least a pair of pair...

Embodiment 2

[0030] Such as Figure 4 and Figure 5 As shown, the difference between the flexible anti-backlash gear with easy-to-control stiffness in embodiment 2 and the flexible anti-backlash gear with easy-to-control stiffness in embodiment 1 is that the second misalignment gear is the first misalignment gear, the leaf spring and the The axial fixed connection arrangement between the shaft sleeves, that is, the arrangement positions of the adjusting gasket and the second side elastic ring are different, and the structure of the boss of the shaft sleeve is different.

[0031] In this embodiment, the boss on the shaft sleeve is stepped, and the diameter of the end is larger, so as to position the second misaligned gear in the axial direction; the second side circlip is installed in the circlip groove in the spoke of the second misaligned gear In order to fix the leaf spring axially.

[0032] The flexible anti-backlash gear with easy-to-control stiffness in this embodiment has the same ...

Embodiment 3

[0034] Such as Figure 6 and Figure 7 The flexible anti-backlash gear with easy-to-control stiffness in Example 3 differs from the flexible anti-backlash gear with easy-to-control stiffness in Example 1 and Example 2 in that the structures of the second misalignment gear and the bushing are slightly different. , in this embodiment, the second misalignment gear is symmetrical to the left and right along the axial direction, and the sleeve is slightly longer.

[0035] In this embodiment, the second misalignment gear is symmetrical to the left and right along the axial direction, the shaft sleeve is slightly longer but the structure remains the same, so as to leave the hook groove of the circlip, and the assembly method is the same as that of Embodiment 1.

[0036] In the flexible anti-backlash gear with easy-to-control stiffness in this embodiment, the second misalignment gear can adjust the assembly direction so as to meet the requirement for flexible anti-backlash in another...

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Abstract

The invention discloses a flexible clearance eliminating gear with rigidity easy to control. The gear comprises a first malposed gear and a second malposed gear which are jointly connected in the axial direction of a transmission shaft, wherein a shaft sleeve is also connected among the first malposed gear, the second malposed gear and the transmission shaft; key grooves are paired in a connected position of the shaft sleeve and the first malposed gear, and a key is connected between the paired key grooves; a boss is also arranged at a connected part of the shaft sleeve and the second malposed gear, at least a paired penetrating groove is formed in corresponding positions of the boss and the second malposed gear which sleeves outside the boss in the circumference direction, and a plate spring is connected between each pair of the paired penetrating grooves in the shaft sleeve; the paired penetrating groove in the second malposed gear and the key groove in the first malposed gear are relatively malposed in the circumference direction. For the gear disclosed by the invention, a connection structure of the flexible clearance eliminating gear is simplified, the problem that the normal contact pressure of a meshed tooth side of a gear pair is hard to be ensured effectively is solved, a clearance in the tooth side is flexibly eliminated, and the impact noise of the gear is eliminated.

Description

technical field [0001] The invention relates to the technical field of gear application, in particular to a flexible anti-backlash gear with easy-to-control stiffness. Background technique [0002] For precision gear transmission and high-speed heavy-duty gear transmission, the impact, vibration and noise of gear transmission are important indicators for evaluating its performance. Tooth backlash is one of the important causes of shock, vibration and noise in gear transmission. [0003] In order to eliminate the backlash of meshing gear teeth and reduce the impact, vibration and noise of gear transmission, anti-backlash gears have emerged as the times require. The anti-backlash gears in the prior art are generally divided into two categories: rigid anti-backlash gears and flexible anti-backlash gears, according to the different connection modes of the two misaligned gears on it. Rigid anti-backlash gear, on which two misaligned gears are fixedly connected to form a rigid c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/18
CPCF16H55/18
Inventor 张杰马兆允
Owner NANJING INST OF TECH
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