KR20020080209A - A booster combined with decelerator - Google Patents

Abstract

PURPOSE: A speed increaser having the speed reducing function is provided to form various speed reducing and increasing ratios from a low ratio to a high ratio, to make possible the application of limitless gear tooth number combination, to make the central distance the same as or different from that of a gear module, and to integrally form sun gears to an input section and an output section. CONSTITUTION: Two sun gears are formed in the front and rear portions on an input shaft(2). Front and rear planetary gears(5,6) engaged with the sun gears are axially installed on carriers(10,11) to be engaged with front and rear internal gears via shaft pins(7). Bosses(10a,11a) are formed on the carriers. Bushes or bearings(14) are formed between the input shaft and the upper ends of the bosses and between the upper ends of shafts holes(12a,13a) of input and output casings(12,13). The sun gear, the planetary gear and the internal gear of an input section are combined with the sun gear, the planetary gear and the internal gear of an output section in the same or different way. The central distances of the gears are set differently. The number of the gear teeth of the internal gears is changeable. Thus, various speed reducing and increasing ratios are obtained.

Description

A booster combined with decelerator}

The present invention relates to a speed reducer combined speed reducer, and more particularly, a module of a gear formed of an input part and an output part may be the same or different, and the center distance of the gear may be the same or different from each other. Various combinations of gears are possible by changing the dimensions of the planetary gear and internal gear arbitrarily.The sun gear is formed integrally with the input shaft at the input and the output, respectively, so that the ratio between the sun gear and the internal gear at the input side The rotational speed of the carrier, the dimensional ratio between the output side sun gear and the internal gear and the rotational angular speed of the carrier are combined to provide a structure to decelerate and increase the speed. Input shaft and output shaft are formed on the same line to select rotational power input as sun gear or carrier When using it as a speed increaser, it is configured to input the rotational power input to the internal gear or the carrier, and to form an output in the opposite direction to the input or form an input and an output in the same direction, one input and two It is to provide a speed reducer combined speed reducer that can combine various input / output methods such as forming an output or forming two inputs and one output.

In the past, various methods have been proposed for the reduction method using a sun gear, a planetary gear, and an internal gear.

Such prior art has been applied for a number of patents and utility models in Japan, as well as in Japanese Patent Application No. 61-79047.

That is, Patent No.123419 and Utility Model 1993-0001538, 1995-000702, 167249, 174088, and Patent Publications 1999-0046818, 2001-0003170, 2001-0010946, Utility Model 2000-0020240, etc. Representative prior art.

The above-mentioned prior arts are mechanically capable of finally obtaining a predetermined reduced rotation ratio through the planetary gear and the internal gear by the rotation speed inputted at a predetermined rotation ratio in one solar gear formed on the input shaft using a sun gear, a planetary gear, and an internal gear. It consists of a mechanism.

In the case of Japanese Patent Application No. 61-79047, the integrally formed I / O planetary gears have differential dimensions, and the internal dimensions are the same as the deceleration method. Patent No.123419 shows the integrally formed I / O planetary gears having the same dimensions and one internal gear. The gears are differential, and Utility Model 20-1999-0007302 has the same dimensions as the integrally formed I / O planetary gears and the internal gears have a differential of two gears. Patents 10-1999-0023348 and 10-1999- 0015530 is a case where the integrally formed input / output planetary gears are differential and the internal gear dimensions are differential, and utility model No. 87732 states that the integrally formed input / output planetary gears have the same dimensions and are integrally formed. Difference, that is, the type consisting of the planetary gear dimensions, and in the case of the practical 20-1999-007302, the internal gear is formed by differentially forming the internal gears with two-valued internal gears. It was.

The various prior arts disclosed a new technical configuration of a reduction gear using a sun gear, a planetary gear, and an internal gear, but had the following problems.

In other words, by manufacturing the upper and lower planetary gears integrally, the center distance is the same, thereby limiting the selection of the gear size (= tooth number), and also had the problem that the normal value was not assembled to produce an excessively high ratio.

In summary, the existing deceleration method consists of three types of planetary gear differential, internal gear differential, planetary gear and internal gear differential. Basically, the input / output planetary gear is integrated and the sun gear is the input or output planetary planet. It is a method of engaging with one gear.

Solar gear can be assembled only at one input or output side, and the sun gear is not assembled by differentially constructing the sun gear, the gear-engaged stage, and the planetary gears or internal gears at the same center distance between the input and output ends. There was a problem in that a blocking phenomenon occurred between the planetary gear and the internal gear because the bite pressure angle between the end and the unsuccessful step was different, and this blocking phenomenon occurred slightly depending on the amount of deviation of the bite pressure angle between the input part and the output part. In the prior art, this blocking phenomenon is expressed as a deceleration method in which a brake function is embedded, but there is no complete braking force depending on the deceleration method, but some brake functions are inherent. Has become the cause of degradation and fever.

These conventional deceleration methods are differentially engaged with the output side composed of planetary gear differential or internal gear differential at the same time when the rotational force of the input planetary gear decelerated by the normal gear biting by the sun gear along the input side internal gear in the planetary gear formed with the input / output integrally. The rotational force is transmitted to reduce the speed, but the planetary gears and internal gears of the sun gearless stage are geared by the cam action by the sliding action, not by the power transmission method by the normal gear bite. There was also a problem that the burnout caused by wear was large.

In addition, since the sun gear is only bited in one place, the torsion action occurs between the planetary gear and the internal gear at the stage where the sun gear cannot be assembled. The unbalanced load and the torsional load are the shaft pins supporting the planetary gears and the carriers and reducers supporting them. It acted as a reverse load on the deceleration efficiency was low.

In order to achieve high deceleration, the planetary gears of the input unit and the output unit are formed artificially to adjust the angle between the planetary gear and the internal gear of the input unit and the output unit due to the planetary gear differential, the internal gear differential, and the planetary gear unit differential. There was a significant difficulty in the work because it required high-precision work that had to be angled.

Also, in order to increase the durability and strength of the gear, it is necessary to increase the degree of the deformed gear after heat treatment through grinding or saving through heat treatment process, but the input / output planetary gear of the reducer is manufactured in one piece and There is a problem that the post processing is difficult because the gears are staggered with each other, and the planetary gear formed with the input / output integrally requires the post process to correct the concentric deformation by the machining process and the heat treatment process. The situation is using without going through.

On the other hand, when reviewing the prior art in the reduction ratio, it is pointed out that there is not a wide range of high ratio and low ratio selection, and that the reduction ratio is selected within a limited range of dimensional selection, and the reduction method using an integrally formed planetary gear is Due to the above-mentioned problems in structure and manufacturing, it is not widely applied to the fields requiring high efficiency, high accuracy, constant speed operation and continuous operation in the reduction gear field of the entire industry.

Accordingly, the present invention is to provide a speed reducer combined speed reducer capable of eliminating all the problems of the existing speed reducer as described above. In the present invention, in particular, the module of the gear formed of the input and output is the same or different combination. Sun gear differential, planetary gear differential, internal gear differential, solar gear and planetary gear and It is possible to combine various types of gears such as internal gear differentials, and the sun gear is formed integrally with the input shaft at the input and output parts, so that the rotational speed of the carrier and the output sun gear according to the dimension ratio between the input sun gear and the internal gear The ratio of the ratio between the inner and inner gears and the rotational angular velocity of the carrier are combined to achieve deceleration and acceleration. It provides a structure, and various reduction / acceleration ratios from low to high ratios, and input and output shafts can be combined on the same line, and various input / output methods can be combined. By forming a structure that can increase the degree of gear through the post-processing such as grinding work or saving work of solar gear and planetary gear, it provides a speed reducer combined gearbox that can input smooth rotational power in both input and output sides. The present invention has been completed with a problem.

Figure 1 shows a preferred embodiment of the speed reducer combined speed increaser provided in the present invention

Phosphorus exploded perspective

2 is a cross-sectional view of the coupling state of the present invention

3 is a cross-sectional view taken along line A-A of the present invention

4 is a cross-sectional view taken along line B-B of the present invention

■ Explanation of symbols used in main part of drawing ■

1: Reducer combined speed increaser 2: Input shaft

3, 4: sun gear 5, 6: planetary gear

7: shaft pin 8, 9:

10,11: carrier 10a, 11a: boss

12,13: casing 12a, 13a: shaft ball

14: Bearing (or bush) 15: Thrust washer

Figure 1 is an exploded perspective view showing a preferred embodiment of the speed reducer combined speed increaser (1) provided by the present invention, Figure 2 is a cross-sectional view of the coupling state thereof, Figures 3 and 4 are AA, BB line cross-sectional view, etc. of the present invention, The present invention with reference to these drawings in detail as follows.

The speed reducer combined speed reducer 1 provided in the present invention forms two sun gears 3 and 4 integrally with the input shaft 2 before and after the input shaft 2, and mutually gears with the sun gears 3 and 4, respectively. Two or more planetary gears 5 and 6 to be bitten are installed on the carriers 10 and 11 so that the two or more planetary gears 5 and 6 can be meshed with the front and rear internal gears 8 and 9 respectively by the shaft pins 7.

Among the carriers 10 and 11, the input side carrier 10 may also selectively play the role of an input shaft together with the input shaft 2, and bosses 10a and 11a are formed on the carriers 10 and 11, respectively. A bush or a bearing 14 is provided between the top of the bosses 10a and 11a and between the shaft holes 12a and 13a of the casings 12 and 13 in which the internal gears 8 and 9 are formed.

Of the casings 12, 13 having the internal gears 8, 9, the front casing 12 is fixed, and the rear casing 13 is a running casing 13.

That is, when rotational force is applied to the input shaft 2, the sun gears 3 and 4 and the geared planetary gears 5 and 6 rotate simultaneously, and at the outside of the planetary gears 5 and 6 Among the geared internal gears 8 and 9, the casing 12 in which the front internal gear 8 is formed is fixed, and the casing 13 in which the rear internal gear 9 is formed is driven and the decelerated rotation output It is derived on the output casing 13.

The planetary gears 5 and 6 are axially mounted on the carriers 10 and 11 with the shaft pins 7 before and after, so that the carriers 10 and 11 can also selectively function as input shafts.

In addition, in the case of the increase speed, when rotational power is applied to the output casing 13, the rotation output which is accelerated to the boss 10a formed in the input shaft 2 and the carrier 10 is derived, and the carrier together with the input shaft 2 The boss 10a formed at 10 can be used as an output shaft.

In the present invention having the above-described structural features, the center distance with respect to the dimensions and modules of the sun gears 3 and 4, the planetary gears 5 and 6 and the internal gears 8 and 9 As the present invention can be arbitrarily changed, the following reduction ratio (Ratio) can be obtained by the following numerous dimensional changes.

Here, the reduction ratio is a formula for calculating the reduction ratio when inputting the rotational power to the sun gear (3,4) formed integrally on the input shaft (2), and inputting the rotational power to the carrier 10 is the following equation 1, Same as 2.

The speed increase ratio of the input shaft 2 is the same as the sun gear drive reduction ratio value, and the speed increase ratio of the carrier 10a is the same as the carrier drive reduction ratio value.

Example 1 (External Gear Differential / Solar Gear, Planetary Gear Same Dimension) S S1 P P1 CC F R Na 11 11 27 27 65 64 Solar gear drive reduction ratio -442.18 Carrier Drive Reduction Ratio -64

Example 2 (solar gear, planetary gear, internal gear differential) S S1 P P1 CC F R Na 11 13 27 25 65 63 Solar gear drive reduction ratio -31.5 Carrier Drive Reduction Ratio -4.5592

Example 3 (Same Gear and Internal Gear Differential / Planetary Gear Dimensions) S S1 P P1 CC F R Na 11 12 27 27 65 66 Solar gear drive reduction ratio -92.889 Carrier Drive Reduction Ratio -13.444

Example 4 Planetary Gears, Internal Gear Differential / Same Gear Dimensions S S1 P P1 CC F R Na 11 11 27 26 65 63 Solar gear drive reduction ratio -217.64 Carrier Drive Reduction Ratio -31.5

Example 5 (Same as Sun Gear, Planetary Gear Differential / Internal Gear Dimension) S S1 P P1 CC F R Na 11 12 27 26 65 65 Solar gear drive reduction ratio -76 Carrier Drive Reduction Ratio -11

However, in Equations 1 and 2 and Tables 1 to 5, S is an input side sun gear 3, S1 is an output side sun gear 4, P is an input planetary gear 5, and P1 is an output planetary gear 6 CC denotes an input side carrier 10, F denotes an input side fixed internal gear 8, and R denotes an output side drive internal gear 9.

When the sign of the deceleration and the speed ratio is (+), the input shaft rotation direction and the output rotation direction are the same, and if the sign is (−), the input shaft rotation direction and the output rotation direction are opposite.

As described in detail above, the speed reducer combined speed reducer 1 provided in the present invention may have the same or different combinations of modules of the gear formed as the input unit and the output unit, and the center distance of the gears may be the same or different. By setting differently, the sun gear (3,4), planetary gear (5,6) and internal gear (8,9) can be arbitrarily changed so that the sun gear (3,4) differential, planetary gear (5) 6) Different types of gear combinations are available, including differential, internal gear (8, 9) differential, solar gear (3, 4) and planetary gear (5, 6) and internal gear (8, 9) differential. It is possible to provide various sizes of gear box according to the demand at the same speed reduction / speed ratio, and sun gears 3 and 4 are formed integrally with the input shaft 2 at the input and output parts, respectively. Rotational speeds of the carriers 10 and 11 according to the ratio of dimensions between the input sun gear 3 and the internal gear 8 and the output sun The combination of the dimensional ratio between the gear 4 and the internal gear 9 and the rotational angular velocity of the carriers 10 and 11 provides a structure in which deceleration and acceleration are achieved. The input shaft (2) and the output shaft are formed on the ship to provide a combination of various input and output methods, and the sun gear (3, 4), the planetary gear (5, 6) Through the heat treatment process, it forms a structure that can improve the precision of gear through grinding and shaving work, and provides a speed reducer combined speed reducer capable of smooth input of rotational power in both input and output directions. It is possible to eliminate all the problems of the system and to provide a new speed-up method in the industrial field where the speed increaser that requires high-precision technology is used. The invention.

Claims (2)

A well-known planetary gear reducer comprising a sun gear formed on an input shaft (2), an input / output planetary gear geared with the sun gear, and an input / output inner gear geared with the input / output planetary gear; Two sun gears 3 and 4 are integrally formed on the input shaft 2 in front and rear, respectively, and two or more planetary gears 5 and 6, which are meshed with the sun gears 3 and 4, respectively, at least two shaft pins. (7) is axially mounted on the carrier (10, 11) so that it can be engaged with the front and rear internal gear (8, 9), Bosses 10a and 11a are formed in the carriers 10 and 11 to form shaft holes 12a of the input shaft 2 and the bosses 10a and 11a and the input and output casings 12 and 13 having internal gears 8 and 9 formed therein. 13a) bushes or bearings 14 are respectively provided between the phases, Module of the sun gear 3, the planetary gear 5, the internal gear 8 and the sun gear 4, the planetary gear 6, the internal gear 9 formed in the input unit The same or different combinations, the center distance of the gear is set to the same or different, and the dimensions of the sun gear (3, 4), planetary gear (5, 6), internal gear (8, 9) The speed reducer combined speed reducer is characterized in that it can be arbitrarily changed to obtain a variety of reduction ratio and speed ratio. The method of claim 1; The reducer combined speed reducer 1 forms an input shaft 2 and an output shaft on the same line, and selects a rotational power input to the input shaft 2 or the carrier 10a when the reducer is used as a reducer. When the input is the internal gear 9, the output can be selected as the carrier 10a or the input shaft 2, and when the rotational power input is the carrier 10a, the output can be the input shaft 2 Reducer combined gearbox characterized by.