Pin plug differential differential speed reducer
Technical field
The utility model belongs to mechanical engineering technical field, is related to a kind of decelerator, and particularly a kind of pin plug differential is differential
Decelerator.
Background technology
With the development of society and science and technology, decelerator is commonly used to each row as a kind of critically important installations
Each industry, particularly numerical control and robot industry, but hysterisis error mostly be present in common decelerator(Abbreviation return difference), return difference production
The reason for raw is due to due to space be present on engaging, so as to cause to lead between drive screw and gear or between gear and gear
Dynamic device moves, and passive device does not produce motion, is presented as that reading is changed in an experiment, and actually fills
Put and do not move, it will usually cause experimental data bigger than normal;And for numerical control device, motor needs frequently to commutate, return difference
In the presence of meeting extreme influence machining accuracy.
Utility model content
The technical problems to be solved in the utility model is:A kind of low return difference even decelerator of zero return difference are provided, to overcome
Above-mentioned deficiency present in prior art.
Solve above-mentioned technical problem technical scheme be:
One kind pin plug differential differential speed reducer, including casing and dynamic disk, fixed disk and driving in casing
Device, drive device are connected with external control device;
The dynamic disk and fixed disk are diameter identical circular disc, and dynamic disc hole is uniformly provided with the circumference of dynamic disk,
Fixed disk hole is uniformly provided with the circumference of fixed disk, what the radius of a circle that dynamic disc hole is centrally formed was centrally formed with fixed disk hole
Radius of a circle is equal, and the dynamic disk is co-axially mounted on center shaft with fixed disk, and fixed disk is fixedly connected with central shaft, moves circle
Disk is connected by bearing with central axis, and dynamic disk is fixedly connected with output sleeve;
The dynamic disc hole is identical from fixed disk hole aperture, pitch-row is different, pitch-row radian B2 and the dynamic disk in fixed disk hole
The difference that the pitch-row radian in hole is B1 is the constant B less than 1;During original state, one of them dynamic disc hole and a fixed disk
Hole is completely superposed;
The drive device includes rotating disk and connected differential pin plug, and the rotating disk center of circle and the fixed disk center of circle are concentric, poor
Position of the dynamic pin plug on rotating disk is corresponding with fixed disk hole, external diameter and the fixed disk hole and the aperture phase of dynamic disc hole of differential pin plug
It is corresponding, under the control of external control device, the differential pin plug inject successively fixed disk fixed disk hole and with the fixed disk
The most similar dynamic disc hole in hole, force and overlapped with the most similar dynamic disc hole in the fixed disk hole with it, so that dynamic disk rotational
Constant B radian;
Above-mentioned pitch-row radian B1 refers to the angle that the dynamic disc hole center of circle of adjacent two is formed with dynamic disc centre line, single
Position is degree, and pitch-row radian B2 refers to the angle that two adjacent fixed disk hole centers of circle are formed with the fixed disk line of centres, and unit is
Degree.
Its further technical scheme is:
The drive device includes rotating disk and a differential pin plug, and the differential pin plug is fixedly connected on rotating disk, controlled
Under the control of device processed, rotating disk drives differential pin plug to inject the fixed disk hole of fixed disk successively and determines circle with this while rotating
The most similar dynamic disc hole of disk hole, force and overlapped with the most similar dynamic disc hole in the fixed disk hole with it, so that dynamic disk turns
Dynamic constant B radian.
Further:
The drive device includes rotating disk and multiple differential pin plugs, and the number of differential pin plug is consistent with fixed disk number of perforations,
Its arrangement on rotating disk is corresponded with fixed disk hole, and the differential pin plug is slidably mounted on rotating disk, in control device
Under control, differential pin plug on rotating disk successively forward slip inject fixed disk fixed disk hole and with the fixed disk hole most phase
Near dynamic disc hole, forces and is overlapped with the most similar dynamic disc hole in the fixed disk hole with it, so that dynamic disk rotates often successively
Number B radian.
The differential pin plug straight pin taper bolt or bearing pin.
Due to using said structure, compared with prior art, the pin plug differential differential speed reducer of the utility model have with
Lower beneficial effect:
1. the pin plug differential differential speed reducer structure of the utility model is relatively easy, precision is high, gap return difference is small;
2. one kind pin plug differential differential speed reducer gear range of the utility model is big, speed reducing ratio is big, poor by reducing
Dynamic spacing can realize bigger speed reducing ratio.
Below, the technical characteristic of the pin plug differential differential speed reducer of the utility model is made into one in conjunction with the accompanying drawings and embodiments
The explanation of step.
Brief description of the drawings
Fig. 1~Fig. 2 is that the pin of embodiment one fills in the structural representation of differential differential speed reducer(Remove casing and outside control
Device):
Fig. 1 is front view, and Fig. 2 is driving device structure schematic diagram;
Fig. 3 is dynamic disc structure schematic diagram;
Fig. 4 is structural representation when fixed disk is overlapping with dynamic disk(Broken circle is dynamic disc hole, and solid line circle is fixed disk
Hole);
Fig. 5~Fig. 6 is that the pin of embodiment two fills in the structural representation of differential differential speed reducer(Remove casing and outside control
Device):
Fig. 5 is front view, and Fig. 6 is driving device structure schematic diagram;
In figure:
1-dynamic disk, 11-dynamic disc hole, 2-fixed disk, 21-fixed disk hole, 3-output sleeve, 4-central shaft,
5-bearing, 6-drive device, 61-rotating disk, 62-differential pin plug.
Embodiment
Embodiment one
One kind pin plug differential differential speed reducer, including casing and dynamic disk 1, fixed disk 2 and drive in casing
Dynamic device 6, drive device is connected with external control device;
The dynamic disk 1 and fixed disk 2 are diameter identical circular disc, and dynamic disc hole is uniformly provided with the circumference of dynamic disk
11, fixed disk hole 21 is uniformly provided with the circumference of fixed disk, the radius of a circle that dynamic disc hole is centrally formed and fixed disk hole center
The radius of a circle of formation is equal, and the dynamic disk is coaxially mounted on central shaft 4 with fixed disk, and fixed disk is fixed with central shaft to be connected
Connect, dynamic disk is connected by bearing 5 with central axis, and dynamic disk is fixedly connected with output sleeve 3;
The dynamic disc hole 11 is identical from the aperture of fixed disk hole 21, pitch-row is different, and the pitch-row radian B2 in fixed disk hole is with moving
The difference that the pitch-row radian of disc hole is B1 is the constant B less than 1;During original state, one of them dynamic disc hole is determined with one
Disc hole is completely superposed;
Above-mentioned pitch-row radian B1 refers to the angle that the dynamic disc hole center of circle of adjacent two is formed with dynamic disc centre line, single
Position is degree, and pitch-row radian B2 refers to the angle that two adjacent fixed disk hole centers of circle are formed with the fixed disk line of centres, and unit is
Degree.
The drive device includes rotating disk 61 and a differential pin plug 62, and the differential pin plug is fixedly connected on rotating disk,
The rotating disk center of circle and the fixed disk center of circle are concentric, a pair of position and the fixed disk hole 1 of position and rotation of the differential pin plug on rotating disk
Should, the external diameter of differential pin plug is corresponding with the aperture in fixed disk hole and dynamic disc hole, and under control of the control means, rotating disk is turning
Driven while dynamic differential pin plug inject successively fixed disk fixed disk hole and with the most similar dynamic disc hole in the fixed disk hole, compel
Make to overlap with it with the most similar dynamic disc hole in the fixed disk hole, so that dynamic disk rotational constant B radian;The differential pin
Fill in straight pin taper bolt or bearing pin.
Embodiment two
One kind pin plug differential differential speed reducer, its structure and embodiment one are essentially identical, including casing and installed in machine
Dynamic disk 1, fixed disk 2 and drive device 6 in shell, drive device is connected with external control device;Except that:
The drive device includes rotating disk and multiple differential pin plugs, and the rotating disk center of circle and the fixed disk center of circle are concentric, differential
Pin plug is slidably mounted on rotating disk, and the number of differential pin plug is consistent with fixed disk number of perforations, and its arrangement on rotating disk is with determining circle
Disk hole corresponds, and the external diameter of differential pin plug is corresponding with the aperture in fixed disk hole and dynamic disc hole, in the control of control device
Under, differential pin plug on rotating disk successively forward slip inject fixed disk fixed disk hole and with the most similar dynamic circle in the fixed disk hole
Disk hole, force and overlapped with the most similar dynamic disc hole in the fixed disk hole with it, so that the arc of dynamic disk rotation constant successively
Degree.
In above-described embodiment, its external control device can be pneumatic, hydraulic pressure, electromagnetism, cam, linear electric motors etc..
Above-described embodiment is one of preferable embodiment of the utility model.
In above-described embodiment, its fixed disk is located between dynamic disk and the rotating disk of drive device;As conversion, fixed disk with
The position of dynamic disk is also replaceable, i.e., dynamic disk is between fixed disk and the rotating disk of drive device.
Operation principle
As shown in figure 4, dynamic disk(Dotted line)And fixed disk(Solid line)Two coaxial discs are superimposed up and down, move disk
(Dotted line)It is rotatable, fixed disk(Solid line)It is fixed, it is completely heavy in initial position, i.e. both the dynamic disc hole of upper end and fixed disk hole
It is folded, turn left or turn right, the spacing in two holes is identical, and at least a pair of holes is overlapping all the time, therefore, as one and fixed circle
When the differential pin plug of disk hole diameter identical often injects a fixed disk hole clockwise or counterclockwise, disk is moved(Dotted line)Relative to fixed
Disk(Solid line)The distance of a roundlet is moved, that is, realizes the rotation of no return difference.
As shown in Figure 4, it is assumed that differential pin plug inserts a Moving plate and turned 0.6 degree, i.e. resolution ratio is 0.6 degree, to many situations
Under be not accurate enough, therefore, the number of pin and pin-and-hole can be extended, by extension, it is possible to achieve latch inserts a Moving plate
0.15 degree is turned, i.e. resolution ratio has reached 0.15 degree, and resolution ratio improved four times originally.
During practical application, by Pulse Width Control drive device, turning how many angle, then differential pin plug inserts how many times successively,
Then differential pin plug is counterclockwise during reversion or up time anaplasia inserts pin order, and this kind of mode can realize very small return difference,
Meet the requirement of numerical control device, suitable for not high to rate request, and the occasion higher to required precision, such as the steering of radar,
The luffing angle, the tracing and positioning of sunshine etc. of cannon.
Above content is to combine the further explanation that specific embodiment is made to the utility model, it is impossible to assert this reality
This is confined to new specific implementation, for the utility model art, is not departing from the utility model design
On the premise of, simple deduction or replace are made, should all be considered as the scope of protection of the utility model.