CN105299167A

CN105299167A - Two-time slewing mechanism

Info

Publication number: CN105299167A
Application number: CN201510736681.2A
Authority: CN
Inventors: 冯超
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-10-28
Filing date: 2015-10-30
Publication date: 2016-02-03

Abstract

A two-time slewing mechanism comprises a base, a first rotating body, a first driving mechanism, a second rotating body, a second driving mechanism and an executing component arranged on the second rotating body. The distance from the centerline of a shaft body of the first rotating body to the centerline of a shaft hole in the first rotating body can be made to be equal or unequal to the distance from the centerline of a shaft body on the second rotating body to the centerline of the executing component. The shaft body and the shaft hole of the first rotating body are located at the two ends of the first rotating body. The mounting position of the shaft body of the second rotating body and the mounting position of the executing component are located at the two ends of the second rotating body respectively. When the two-time slewing mechanism works, under the control of a numerical control servo system, the first rotating body can rotate independently or the second rotating body can rotate independently or the first rotating body and the second rotating body rotate simultaneously. In this way, the executing component can move according to a set track. Pure rolling friction is achieved for the components of the two-time slewing mechanism, no easily damaged part is applied, the service life is long, and high-precision work can be kept for a long time.

Description

A kind of secondary returning rotation mechanism

Technical field

The present invention relates to a kind of mechanically operated secondary returning rotation mechanism.

Background technique

Currently available technology, in order to the power unit realizing machinery is accurately located thus makes this power unit according to required orbiting motion under the control of digital control servo system in working plane, what people adopted is the cross saddle mechanism that lead screw guide rails device or linear electric motor+track-type facilities isoline element form.Existing problems are: its complex structure and be difficult to making and installation, cause the manufacture cost of equipment and maintenance cost to remain high.

Summary of the invention

The object of the invention is: a kind of secondary returning rotation mechanism is provided, it can make power unit linearly, circumference or the motion of other arbitrary curves, its manufacture cost and the low and long service life of maintenance cost, precision is higher than cross saddle mechanism.

The present invention is achieved in that a kind of secondary returning rotation mechanism, it comprises, and pedestal, first is turned, the first driving mechanism, second is turned, the second driving mechanism and be arranged on second turn on power unit,

The axis hole pivot joint of the first axis body of turning and pedestal, the first driving mechanism drives first to turn rotation;

Second axis body of turning and first turn on axis hole pivot joint, the second driving mechanism drives second axis body of turning;

The center line of the first axis body of turning turn to first on the distance between center line and second of axis hole turn on axis body center line can make equal or not etc. to the distance of the center line of power unit.

First axis body of turning and axis hole are positioned at the first two ends of turning;

Second axis body of turning and power unit installation place lay respectively at the second two ends of turning.

Described a kind of secondary returning rotation mechanism, its special way is: described first to turn, second turn and be respectively circular or bar shaped;

Described first axis body of turning is arranged on first center of circle of turning, first turn on axis hole be positioned at first and turn circumferentially;

Described second axis body of turning is arranged on second center of circle of turning, and power unit installation position is positioned at second and turns circumferentially.

The present invention is a kind of secondary returning rotation mechanism.During its work, under the control of digital control servo system, this mechanism can first turn and rotates separately, also can second turn and rotates separately, or first turns to turn with second and rotate simultaneously.This just can make power unit move according to set rule mark.The component of this structure is pure rolling friction, and without easily damaged parts, long service life, can keep highi degree of accuracy work for a long time.

Accompanying drawing explanation

Fig. 1 is partial sectional view of the present invention.

Fig. 2 is running orbit schematic diagram of the present invention.

Fig. 3 is secondary polar coordinates analysis diagram of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

As shown in Figure 1, a kind of secondary returning rotation mechanism, it comprises pedestal 1, first the 2, first driving mechanism 3, second of turning and to turn the 4, second driving mechanism 5 and be arranged on the second power unit 6 of turning on 4,

First turns the axis body 21 of 2 and the axis hole pivot joint of pedestal 1, the first driving mechanism 3 drive first turn 2 axis body 21;

The axis hole pivot joint that second axis body 41 and first of turning 4 is turned on 2, the second driving mechanism 5 drive second turn 4 axis body 41;

Axis body 41 center line that first center line of axis body 21 of turning 2 is turned on 4 to the distance between center line and second of the first axis hole of turning on 2 is equal to the distance of the center line of power unit 6, also can be unequal.

Described first, second is turned 2,4 rounded or bar shapeds;

First turn 2 axis body 21 and axis hole lay respectively at the first two ends of turning;

Second turn 4 axis body 41 and power unit installation place lay respectively at second turn 4 two ends.

Another embodiment of the invention: described first turn 2, second turn 4 respectively circular;

Described first turn 2 axis body 21 be arranged on first and turn on the center of circle of 2, the first axis hole of turning on 2 is positioned at first and turns 2 circumferentially;

Described second turn 4 axis body 41 be arranged on second and turn on the center of circle of 4, power unit installation position is positioned at second and turns 4 circumferentially.

Described first driving mechanism 3 comprises the first actuating motor 31, first active cone gear 32 and the first driven bevel gear 33, first actuating motor 31 is fixed on base 1, and the first active cone gear 32 is fixedly connected with the axle of the first actuating motor 31; First driven bevel gear 33 and first turn 2 axis body 21 be fixedly connected with.

Described second driving mechanism 5 comprise the second actuating motor 51, second initiatively cone gear 52 and the second driven bevel gear 53, second actuating motor 51 be fixed on first and turn on 2, second initiatively cone gear 52 be fixedly connected with the axle of the 5th actuating motor 51; Second driven bevel gear 53 and second turn 4 axis body 41 be fixedly connected with.

As shown in Figure 3:

First turn 2 the center line of axis body 21 be R1 to the distance between center line that first turns 2 upper shaft holes;

Second axis body 41 center line of turning on 4 is R2 to the distance of the center line of power unit 6;

First turn 2 corner be A;

Second turn 4 corner be B;

Power unit 6 is (X, Y) at the Di Kaer coordinate of 1 n in space;

Then as R1 ≠ R2, namely, when first center line of axis body 21 of turning 2 axis body 41 center line of turning on 4 to the distance between center line and second that first turns 2 upper shaft holes is made unequal to the distance of the center line of power unit 6, then, power unit is according to the determined rule mark motion of following parametric equation:

\{\begin{matrix} X = R_{1} \cos A + R_{2} \cos B \\ y = R_{1} \sin A + R_{2} \sin B \end{matrix}

As R1=R2=R, namely, when first center line of axis body 21 of turning 2 axis body 41 center line of turning on 4 to the distance between center line and second that first turns 2 upper shaft holes is made equal to the distance of the center line of power unit 6, then, power unit is according to the determined rule mark motion of following parametric equation:

\{\begin{matrix} X = R (\cos A + \cos B) \\ Y = R (\sin A + \sin B) \end{matrix}

Above-described is only one embodiment of the present invention.It should be pointed out that for a person skilled in the art, when not departing from above-mentioned parameter equation of the present invention and disclosing principle, can also make some improvement and modification, this is also considered as protection scope of the present invention.

Claims

1. a secondary returning rotation mechanism, is characterized in that: it comprises, and pedestal, first is turned, the first driving mechanism, second is turned, the second driving mechanism and be arranged on second turn on power unit,

The center line of the first axis body of turning turn to first on the distance between center line (R1) and second of axis hole turn on axis body center line equal or unequal to the distance (R2) of the center line of power unit.

2. a kind of secondary returning rotation mechanism according to claim 1, is characterized in that: described first, second is turned in bar shaped;

3. a kind of secondary returning rotation mechanism according to claim 1, is characterized in that: described first to turn, second turn rounded respectively;