Gear pair for preventing collision and ensuring center distance

Abstract

The invention relates to a gear pair for preventing collision and ensuring center distance, which solves the problems that the cost for ensuring the center distance through the base processing precision and the assembly is high, the collision between gears cannot be prevented, and the noise is high. A first gear (4) is mounted on a slide gear shaft (6), and a second gear (1) is mounted on a fixed gear shaft (7); the slide gear shaft (6) is in movable fit with a groove (3a) in a first base (3); the fixed gear shaft (7) is mounted on a second base (2), and the second base (2) is fixed with the first base (3); one end of a gear jacking spring (5) is connected with the groove (3a) in the first base (3), and the other end of the gear jacking spring (5) is propped against the slide gear shaft (6); the first gear (4) and the second gear (1) are meshed through the pre-tightening force of the gear jacking spring (5). During meshing, a second cylinder (1a) which is connected with the side surface of the second gear (1) is in contact with a first cylinder (4a) which is connected with the side surface of the first gear (4), the reference diameter of the second cylinder (1a) is equal to that of the second gear, and the reference diameter of the first cylinder (1a) is equal to that of the first gear.

Description

Technical field: [0001] The invention relates to a gear pair for preventing impact and ensuring center distance. Background technique: [0002] At present, the conventional gear meshing is mainly divided into the following two situations: The first situation is the fixed meshing of the gears, that is, the central axes of the two gears are on the same base, and the center distance is guaranteed by the machining accuracy (such as figure 1 ). The second case is the dynamic meshing of the gears, that is, the central axes of the two gears are on different bases, the gear 1 is installed on the base 2, the gear 4 is installed on the base 3, and the base 3 is connected to the base 2. The datum is close to it, and after reaching the position of the theoretical center distance, use parts such as screws or buckles to position, and ensure the center distance of the gear through the machining accuracy and assembly of the base (such as figure 2 ). These two cases have their own def...

AI Technical Summary

Problems solved by technology

These two cases have their own defects. In the first case, the processing accuracy of the gear and the base needs to be guaranteed at the same time. If the processing accuracy of one party cannot be guaranteed, the center distance may not be guaranteed.

The second situation is more demanding. Not only must the machining accuracy of the gear and the base be guaranteed, but also a reasonable assembly process is required to ensure the assembly accuracy. In addition, the gear may be injured during the assembly process.

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