RV reducer with planet wheels being in interference fit with crankshafts
A technology of interference fit and planetary gear, which is applied to belts/chains/gears, transmission parts, mechanical equipment, etc., can solve problems such as increasing processing difficulty, and achieve the effect of simplifying tools and reducing processing difficulty
Pending Publication Date: 2017-11-24
国机智能技术研究院有限公司
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These all increase the difficulty of processing, and put forward higher requirements for processing tools, tooling and technology
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[0036] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention, not to limit the scope of the present invention.
[0037] Such as Figure 4-8 As shown, an RV reducer with a planetary gear and a crankshaft in interference fit of the present invention. The RV reducer includes a sun gear 1 and a plurality of planetary wheels 2 and a plurality of crankshafts 3, and the planetary wheels 2 are The sun gear 1 is in a transmission connection, a mounting hole 22 is opened in the middle of the planetary gear 2, and the crankshaft 3 passes through the mounting hole 22 and is in an interference fit with the planetary gear 3. The planetary gear 2 Set in one-to-one correspondence with crankshaft 3.
[0038] In the prior art, the RV reducer is a precision reducer widely used in industrial robots. The existing formed component structure mainly uses the sun gear 1 as ...
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The invention relates to an RV reducer with planet wheels being in interference fit with crankshafts. The RV reducer comprises a center gear, the multiple planet wheels and the multiple crankshafts, wherein the multiple planet wheels are all in transmission connection with the center gear, the middle portions of the planet wheels are provided with installation holes, the crankshafts penetrate the installation holes and are in interference fit with the planet wheels, and the planet wheels correspond to the crankshafts in a one-to-one manner. According to the RV reducer, the planet wheels and the crankshafts are arranged in an interference fit manner rather than a traditional spline pair for connection, it is not need to prepare high-precision spline machining cutter any longer, it is not need to take the spline deformation problem caused by heat treatment into consideration, it is not need to use a relatively-complex spline shaft tool for conducting gear grinding positioning on the planet wheels, it is not need to conduct circumferential positioning on the crankshafts, it is not need to use a relatively-complex spline hole tool for conducting eccentric segment grinding positioning on the crankshafts, and therefore the machining difficulty is lowered, and a cutter, a process and a tool are simplified.
Description
Technical field [0001] The invention relates to the technical field of reducers, in particular to an RV reducer with interference fit between planetary gears and crankshafts. Background technique [0002] RV reducer is a precision reducer widely used in industrial robots, such as figure 1 with figure 2 As shown, it is composed of an involute cylindrical gear planetary reduction mechanism and a cycloid pin wheel planetary reduction mechanism. The involute cylindrical gear planetary reduction mechanism is composed of a sun gear 1, a planetary wheel 2 and a planet carrier 7. The cycloidal pin wheel planetary reduction mechanism is composed of a crank shaft 3, a needle tooth 4, a first cycloidal wheel 5, a second cycloidal wheel 6 and a needle gear housing 8. The planetary gear 2 and the crankshaft 3 are connected as a whole through the spline pair 21, which serves as the input of the cycloid pin wheel planetary reduction mechanism. The first cycloidal wheel 5 and the second cyclo...
Claims
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IPC IPC(8): F16H37/12F16H57/023F16H57/08
CPCF16H37/12F16H57/023F16H57/08
Inventor 赵盛段素爽
Owner 国机智能技术研究院有限公司